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NASA TECHNICAL STANDARD NASA-STD 8709.22 !"#$%&"' )*+%&",#$-. "&/ 01"-* )/2$&$.#+"#$%& 3".4$&5#%&6 78 9:;<= Approved: 2010-12-08 Baseline w/ Change 1 of 2011-01-07 SAFETY AND MISSION ASSURANCE ACRONYMS, ABBREVIATIONS, AND DEFINITIONS Measurement System Identification: None APPROVED FOR PUBLIC RELEASE – DISTRIBUTION IS UNLIMITED Downloaded from http://www.everyspec.com

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Page 1: SAFETY AND MISSION ASSURANCE ACRONYMS, ABBREVIATIONS…everyspec.com/NASA/NASA-NASA-STD/download.php?spec=NASA-ST… · safety and mission assurance acronyms, abbreviations, ... acronyms,

NASA TECHNICAL STANDARD NASA-STD 8709.22

!"#$%&"'()*+%&",#$-.("&/(01"-*()/2$&$.#+"#$%&(3".4$&5#%&6(78((9:;<=(

Approved: 2010-12-08 Baseline w/ Change 1 of 2011-01-07

SAFETY AND MISSION ASSURANCE ACRONYMS, ABBREVIATIONS, AND

DEFINITIONS

Measurement System Identification:

None

APPROVED FOR PUBLIC RELEASE – DISTRIBUTION IS UNLIMITED

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DOCUMENT HISTORY LOG

Status Document Revision Approval Date Description

Baseline 2010-12-08 Initial Release

(JWL4)

Change 1 2011-01-07

Correction of typographical errors, change definition of availability and

add definition of total time (JWL4)

(

This document is subject to reviews per Office of Management and Budget Circular A-119, Federal Participation in the Development and Use of Voluntary Standards (02/10/1998) and NPD 7120.4, NASA Engineering and Program/Project Management Policy (Paragraph 1.h).

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NASA-STD 8709.22 with Change 1 (

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FOREWORD B4$.(!)0)C0B7($.("11+%D*/(>%+(,.*(EF(!)0)(G*"/H,"+#*+.("&/(!)0)(8*&#*+.6($&-',/$&5(8%21%&*&#(I"-$'$#$*.J((B4$.(!)0)C0B7(2"F(E*("11'$*/(%&(-%&#+"-#.(1*+(-%&#+"-#,"'(/%-,2*&#"#$%&(".("(+*>*+*&-*(%+(#+"$&$&5(1,E'$-"#$%&J(

8%22*&#.("&/(H,*.#$%&.(-%&-*+&$&5(#4*(-%&#*&#.(%>(#4$.(1,E'$-"#$%&(.4%,'/(E*(+*>*++*/(#%(#4*(!"#$%&"'()*+%&",#$-.("&/(01"-*()/2$&$.#+"#$%&6(7$+*-#%+6(0">*#F("&/()..,+"&-*(K*H,$+*2*&#.(7$D$.$%&6(L>>$-*(%>(0">*#F("&/(M$..$%&()..,+"&-*6(3".4$&5#%&6(78(9:;<=J(

K*H,*.#.(>%+($&>%+2"#$%&6(-%++*-#$%&.6(%+("//$#$%&.(#%(#4$.(!)0)C0B7(.4"''(E*(.,E2$##*/(D$"(NI**/E"-OP($&(#4*(!)0)(B*-4&$-"'(0#"&/"+/.(0F.#*2("#(4##1QRR.#"&/"+/.J&"."J5%D(%+(#%(#4*(!"#$%&"'()*+%&",#$-.("&/(01"-*()/2$&$.#+"#$%&6(7$+*-#%+6(0">*#F("&/()..,+"&-*(K*H,$+*2*&#.(7$D$.$%&6(L>>$-*(%>(0">*#F("&/(M$..$%&()..,+"&-*6(3".4$&5#%&6(78(9:;<=J(

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TABLE OF CONTENTS

1( SCOPE......................................................................................................................... 7(?J?( U,+1%.*(JJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJV(?J9( )11'$-"E$'$#F(JJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJV(

2( REFERENCE DOCUMENTS .................................................................................. 8(9J?( W*&*+"'(JJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJA(9J9( W%D*+&2*&#(7%-,2*&#.(JJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJA(9J@( !%&CW%D*+&2*&#(7%-,2*&#.(JJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJA(

3( ACRONYMS AND DEFINITIONS ......................................................................... 9(@J?( )-+%&F2.(JJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJ?:(@J9( 7*>$&$#$%&.JJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJ9=(

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Safety and Mission Assurance Terms and Definitions

1 SCOPE

?J? Purpose

B4$.(.#"&/"+/(/*>$&*.(,&$>%+2(.">*#F6(+*'$"E$'$#F6(2"$&#"$&"E$'$#F6("&/(H,"'$#F("..,+"&-*(X0KMYZ)[("&/(+$.O(2"&"5*2*&#(#*+2.(#%(.,11%+#(*>>*-#$D*(-%22,&$-"#$%&(\$#4$&(!)0)("&/(\$#4($#.(-%&#+"-#%+.J((B4*(/*>$&$#$%&.($&(#4$.(.#"&/"+/("+*(#4*(%>>$-$"'(!)0)(0KMYZ)(-%22,&$#F(/*>$&$#$%&.(>%+(-%22%&'F(,.*/(#*+2.J((B4*(#*+2.("&/(/*>$&$#$%&.(-%&#"$&*/(\$#4$&(#4$.(.#"&/"+/(.,11%+#(#4*($&#*+1+*#"#$%&("&/(,.*(%>(/%-,2*&#"#$%&("..%-$"#*/(\$#4(!)0)T.(0KMYZ)("-#$D$#$*.J(

?J9 Applicability

B4$.(.#"&/"+/($.("11'$-"E'*(#%(!)0)(G*"/H,"+#*+.6(!)0)(8*&#*+.6($&-',/$&5(8%21%&*&#(I"-$'$#$*.6("&/(#%(!)0)(-%&#+"-#%+.(#%(#4*(*]#*&#($#($.("11'$*/(%&(#4*(-%&#+"-#J(

B4$.(.#"&/"+/(2"F(E*(-$#*/($&(-%&#+"-#6(1+%5+"26("&/(%#4*+()5*&-F(/%-,2*&#.(".("(.,11%+#$&5(/%-,2*&#(>%+(#*-4&$-"'(+*H,$+*2*&#.(%+(".("(+*>*+*&-*(>%+(5,$/"&-*J(((

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2 REFERENCE DOCUMENTS

9J? General

9J?J?((B4*(/%-,2*&#.('$.#*/($&(#4$.(.*-#$%&(\*+*(,.*/(".(.%,+-*(2"#*+$"'(#%(%E#"$&(#4*("EE+*D$"#$%&.6("-+%&F2.6("&/(/*>$&$#$%&.(1+%D$/*/($&(#4$.(.#"&/"+/("&/("+*(+*>*+*&-*/(\$#4$&(#4$.(/%-,2*&#J((X!%#*Q((!%#("''(#*+2.("&/(/*>$&$#$%&.(>+%2("''(%>(#4*(+*>*+*&-*/(/%-,2*&#.("+*($&-',/*/($&(#4$.(!)0)C0B76(.%2*(#4"#(\*+*(/*#*+2$&*/(#%(E*(%>('$2$#*/(,.*(%,#.$/*(%>("(.1*-$>$-(/$.-$1'$&*(\*+*(&%#($&-',/*/($&(#4$.(>$+.#($..,"&-*(%>(#4$.(!)0)C0B7J[(((

9J?J9((B4*('"#*.#($..,"&-*.(%>(-$#*/(/%-,2*&#.(.4"''(E*(,.*/(,&'*..(%#4*+\$.*($&/$-"#*/J((B4*(+*>*+*&-*(/%-,2*&#.("+*("--*..$E'*(D$"(#4*(!)0)(L&'$&*(7$+*-#$D*.(^&>%+2"#$%&(0F.#*2(X!L7^0[("#(4##1QRR&%/$.@J5.>-J&"."J5%DR(%+(#4*(!)0)(B*-4&$-"'(0#"&/"+/.(0F.#*2("#(4##1QRR.#"&/"+/.J&"."J5%D6(%+(/$+*-#'F(>+%2(#4*(0#"&/"+/.(7*D*'%1$&5(L+5"&$_"#$%&.(X07L.[(%+(%#4*+(/%-,2*&#(/$.#+$E,#%+.J(

9J9 Government Documents NATIONAL AERONAUTICS AND SPACE ADMINISTRATION(

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9J@ Non-Government Documents None

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3 ABBREVIATIONS, ACRONYMS, AND TERM DEFINITIONS

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(Acronym Term f8(( /*5+**(8*'.$,.(fI(( /*5+**(I"4+*&4*$#()Yb( )+-4$#*-#("&/(b&5$&**+$&5()C;:( )*+%_$&*C;:(Xe7MG[()"( )-4$*D*/()D"$'"E$'$#F())( !)0)()..%-$"#*()/2$&$.#+"#%+()8( )'#*+&"#$&5(8,++*&#()8W^G(( )2*+$-"&(8%&>*+*&-*(%>(W%D*+&2*&#"'(^&/,.#+$"'(GF5$*&$.#.()8^(( )2*+$-"&(8%&-+*#*(^&.#$#,#*()7)( )2*+$-"&.(\$#4(7$."E$'$#$*.()-#()IS( )$+(I%+-*(S".*()III(( )H,*%,.(I$'2(I%+2$&5(I%"2()IL0G( )$+(I%+-*(L--,1"#$%&"'(0">*#F("&/(G*"'#4()I0U8M)!( )$+(I%+-*(01"-*(8%22"&/(M"&,"'()W)(( )2*+$-"&(W".()..%-$"#$%&()WM)( )2*+$-"&(W*"+(M"&,>"-#,+*+.()..%-$"#$%&()W0( )E%D*(W+%,&/(0$#*.()Gg( ),#4%+$#F(G"D$&5(g,+$./$-#$%&()$( ^&4*+*&#()D"$'"E$'$#F()^))( )2*+$-"&(^&.#$#,#*(%>()*+%&",#$-.("&/().#+%&",#$-.()^0( )EE+*D$"#*/(^&`,+F(0-"'*()a)K)( ).(a%\(".(K*".%&"E'F()-4$*D"E'*()abKB( )-,#*(a",&-4(b2*+5*&-F(K*'$"E$'$#F(B$1()M7( )$+-+">#(M"&"5*2*&#(7$D$.$%&()!0^(( )2*+$-"&(!"#$%&"'(0#"&/"+/.(^&.#$#,#*()%( L1*+"#$%&"'()D"$'"E$'$#F()L( )&&%,&-*2*&#(%>(L11%+#,&$#F()L)( )&&,"'(L1*+"#$&5()5+**2*&#((

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Acronym Term )0BM(( )2*+$-"&(0%-$*#F(>%+(B*.#$&5("&/(M"#*+$"'.()B7( )/D"&-*/(B*-4&%'%5F(7*D*'%12*&#(S)^K( S+*"#4$&5()$+(S^B(( S,$'#C$&CB*.#(SU( S*.#(U+"-#$-*(SK0( S".*'$&*(K*H,$+*2*&#.(0*#((S3K(( S%$'$&5(3"#*+(K*"-#%+(8)( 8%''$.$%&()D%$/"&-*(8))0( 8%&#+"-#()/2$&$.#+"#$%&("&/(),/$#(0*+D$-*(8)7( 8%21,#*+()$/*/(7*.$5&(8)70( 8"+#+$/5*()-#,"#*/(7*D$-*.(8)M( 8%''$.$%&()D%$/"&-*(M"&*,D*+(8)U( 8%++*-#$D*()-#$%&(U'"&(8)K)( 8%''$.$%&()D%$/"&-*(K$.O()..*..2*&#(8)0( 8%&#+"-#()/2$&$.#+"#$%&(0*+D$-*.(

84*2$-"'()E.#+"-#(8)0b(( 8%21,#*+()$/*/(0%>#\"+*(b&5$&**+$&5((88S(( 84"&5*(8%&#+%'(S%"+/((87( 8*&#*+(7$+*-#%+(87K(( 8+$#$-"'(7*.$5&(K*D$*\((87Ka(( 8%&#+"-#(7*'$D*+"E'*.(K*H,$+*2*&#.(a$.#(8bd( 8+*\(b]1'%+"#$%&(d*4$-'*(8IK(( 8%/*(%>(I*/*+"'(K*5,'"#$%&.(8W( 8%21"#$E$'$#F(W+%,1(8W)(( 8%21+*..*/(W".()..%-$"#$%&(8GML( 84$*>(G*"'#4("&/(M*/$-"'(L>>$-*+(8^( 8%&>$5,+"#$%&(^#*2(8^b0( 8%22,&$#F(^&>%+2"#$%&(b]-4"&5*(0F.#*2(8^a( 8+$#$-"'(^#*2.(a$.#(-2(( 8*&#$2*#*+(8M(( 8%&>$5,+"#$%&(M"&"5*2*&#((8M))(( 8+"&*(M"&,>"-#,+*+.()..%-$"#$%&(%>()2*+$-"6(^&-J(8MMj( 8"1"E$'$#F(M"#,+$#F(M%/*'(8MM^j(( 8"1"E$'$#F(M"#,+$#F(M%/*'(^&#*5+"#$%&(8MMC03( 8"1"E$'$#F(M"#,+$#F(M%/*'(C(0%>#\"+*(8ML( 8%&#+"-#(M"&"5*2*&#(L>>$-*(

8%&>$5,+"#$%&(M"&"5*2*&#(L+5"&$_"#$%&((8MLK( 8"&"/$"&(M*#*%+(L+E$#(K"/"+((8M0( 8%&#$&5*&-F(M"&"5*2*&#(0F.#*2(8!8( 8+$#$-"'(!%&-%21'$"&-*(8!W( 8%21+*..*/(!"#,+"'(W".(8L( 8%&#+"-#$&5(L>>$-*+(8%I(( 8%&.#+,-#$%&(%>(I"-$'$#$*.(

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NASA-STD 8709.22 with Change 1 (

?9(%>(?@A(

Acronym Term 8%IK(( 8*+#$>$-"#$%&(%>(I'$54#(K*"/$&*..((8La)( 8%''$.$%&()D%$/"&-*(

8%''$.$%&(%&(a",&-4()..*..2*&#(8LUeL0(( 8%22$##**(%&(#4*(U*"-*>,'(e.*.(%>(L,#*+(01"-*(8LUd( 8%21%.$#*(LD*+\+"11*/(U+*..,+*(d*..*'(8LBK(( 8%&#+"-#$&5(L>>$-*+k.(B*-4&$-"'(K*1+*.*&#"#$D*(8LB0(( 8%22*+-$"'(L>>(#4*(04*'>(

8%22*+-$"'(L+E$#"'(B+"&.1%+#"#$%&(0*+D$-*.(8Z)( 8%&#+"-#(Z,"'$#F()..,+"&-*(8KI(( 8+$#$-"'(K"/$"&#(I',](8KM( 8%&#$&,%,.(K$.O(M"&"5*2*&#(80L( 84$*>(0M)(L>>$-*+(8Bb( 8%*>>$-$*&#(%>(B4*+2"'(b]1"&.$%&(8d8M( 8%''*-#*/(d%'"#$'*(8%&/*&."E'*(M"#*+$"'(8d7( 84*2$-"'(d"1%+(7*1%.$#$%&(83( 8%&#$&,%,.(3"D*(7)0(( 7*E+$.()..*..2*&#(0%>#\"+*(7)0GL( 7*.$5&"#*/()5*&-F(0">*#F("&/(G*"'#4(L>>$-$"'(78(( 7$+*-#(8,++*&#(78M)( 7*>*&.*(8%&#+"-#(M"&"5*2*&#()5*&-F(78K(( 7*.$5&(8*+#$>$-"#$%&(K*D$*\((77b0S( 7*1"+#2*&#(%>(7*>*&.*(b]1'%.$D*.(0">*#F(S%"+/(7IK8( !)0)(7+F/*&(I'$54#(K*.*"+-4(8*&#*+(7^a( 7*'$D*+"E'*(^#*2.(a$.#((7^U( 7,"'C^&Ca$&*(U"-O"5*(7!B( 7$&$#+%#%',*&*(7%7( 7*1"+#2*&#(%>(7*>*&.*(7Lb(( 7*1"+#2*&#(%>(b&*+5F(7La( 7*1"+#2*&#(%>(a"E%+(7LB( 7*1"+#2*&#(%>(B+"&.1%+#"#$%&(708( 7$>>*+*&#$"'(0-"&&$&5(8"'%+$2*#+F(7B)( 7$>>*+*&#$"'(B4*+2"'()&"'F.$.(7d)( 7$D$&F'"-*#F'*&*(b)K(( b]1%+#()/2$&$.#+"#$%&(K*5,'"#$%&.(b)d( b]1*+$2*&#"'()*+%.1"-*(d*4$-'*(

b]1*+$2*&#"'()*+%&",#$-"'(d*4$-'*(bS3( b]1'%/$&5(S+$/5*(3$+*(b-( b]1*-#"#$%&(%>(8".,"'#F(b8M( b"+#4(8%D*+*/(M"5"_$&*(b7( b]*-,#$D*(7$+*-#%+(bb7( b'*-#+%Cb]1'%.$D*(7*D$-*(bbb( b'*-#+$-"'6(b'*-#+%&$-6("&/(b'*-#+%2*-4"&$-"'(bbaU( b]1'%.$D*.6(b&*+5*#$-(a$H,$/.6("&/(UF+%#*-4&$-.(

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NASA-STD 8709.22 with Change 1 (

?@(%>(?@A(

Acronym Term bGY0( b&D$+%&2*&#"'(G*"'#4("&/(0">*#F(b^7( b'*-#+$-"''F(^&$#$"#*/(7*D$-*(b^70( b]#+*2*'F(^&.*&.$#$D*(7*#%&"#$&5(0,E.#"&-*(ba8W( b&*+5*#$-(a$H,$/(8%21"#$E$'$#F(W+%,1(bad(( b]1*&/"E'*(a",&-4(d*4$-'*(bM( b&5$&**+$&5(M*2%+"&/,2(bMb( b'*-#+%2"5&*#$-(b&*+5F(

b'*-#+%2"5&*#$-(b&D$+%&2*&#(bMK( b'*-#+%2"5&*#$-(K"/$"#$%&(bM0(( b2*+5*&-F(M*/$-"'(0*+D$-*(bL(( b]*-,#$D*(L+/*+(bL7( b]1'%.$D*.(L+/&"&-*(7$.1%."'(bLM(( b&/(%>(M$..$%&(bLMU( b&/(%>(M$..$%&(U'"&(bL0( b"+#4(LE.*+D$&5(0F.#*2(bU)(( b&D$+%&2*&#"'(U+%#*-#$%&()5*&-F(bU0( b&5$&**+$&5(U*+>%+2"&-*(01*-$>$-"#$%&(bKS( b&5$&**+$&5(K*D$*\(S%"+/(bKU( b>>*-#$D*(K"/$"#*/(U%\*+(bKUW( b2*+5*&-F(K*.1%&.*(U'"&&$&5(W,$/*'$&*.(b0( b]1%.*/(0$#*(b0)(( b,+%1*"&(01"-*()5*&-F(b07( b'*-#+%.#"#$-(7$.-4"+5*(

bD*&#(0*H,*&-*(7$"5+"2(b0M7( b]1'%+"#$%&(0F.#*2.(M$..$%&(7$+*-#%+"#*(b0L(( b]1'%.$D*(0">*#F(L>>$-*+(b0Z7( b]1'%.$D*(0">*#F(Z,"&#$#F(7$.#"&-*(b00U( b"+#4(0F.#*2(0-$*&-*(U"#4>$&/*+(bB)( bD*&#(B+**()&"'F.$.(bBS)( b&*+5F(B+"-*(S"++$*+()&"'F.$.(bd)( b]#+"D*4$-,'"+()-#$D$#F(bdM( b"+&*/(d"',*(M"&"5*2*&#(I))(( I*/*+"'()D$"#$%&()/2$&$.#+"#$%&(I)8^(( I$+.#()+#$-'*(8%&>$5,+"#$%&(^&.1*-#$%&((I)b( I,*'C)$+(b]1'%.$D*(I)K(( I*/*+"'()-H,$.$#$%&(K*5,'"#$%&(I8)( I,&-#$%&"'(8%&>$5,+"#$%&(),/$#(I78(( I$+*(7*1"+#2*&#(8%&&*-#$%&(I7^K(( I",'#(7*#*-#$%&6(^.%'"#$%&6("&/(K*-%D*+F(Ib7C0B7( I*/*+"'(0#"&/"+/(Ibb)( I*/*+"'(b21'%F**.(b/,-"#$%&("&/()..$.#"&-*(I,&/(IbG(( I"-$'$#$*.(b&5$&**+$&5(G"&/E%%O(IbM)( I*/*+"'(b2*+5*&-F(M"&"5*2*&#()5*&-F((

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NASA-STD 8709.22 with Change 1 (

?<(%>(?@A(

Acronym Term IG)( I"-$'$#F(G"_"+/()&"'F.$.(

I",'#(G"_"+/()&"'F.$.(IM(( I"-#%+F(M,#,"'(X7"#"(04**#.[(IMb)(( I"$',+*(M%/*.("&/(b>>*-#.()&"'F.$.(IMb)R8^a(( I"$',+*(M%/*.("&/(b>>*-#.()&"'F.$.R8+$#$-"'(^#*2.(a$.#(IMb8)(( I"$',+*(M%/*.6(b>>*-#.6("&/(8+$#$-"'$#F()&"'F.$.(IL7( I%+*$5&(LE`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b^)( W%D*+&2*&#(b'*-#+%&$-.("&/(^&>%+2"#$%&()..%-$"#$%&(WbL( W*%.F&-4+%&%,.(b"+#4(L+E$#(WIb( W%D*+&2*&#(I,+&$.4*/(bH,$12*&#(WIU( W%D*+&2*&#(I,+&$.4*/(U+%1*+#F(WG_( W$5"4*+#_(W^7bU( W%D*+&2*&#C^&/,.#+F(7"#"(b]-4"&5*(U+%5+"2(WM^7( W%D*+&2*&#(M"&/"#%+F(^&.1*-#$%&(7%-,2*&#((WM^U( W%D*+&2*&#(M"&/"#%+F(^&.1*-#$%&(U%$&#((WLb0( W*%.#"#$%&"+F(L1*+"#$%&"'(b&D$+%&2*&#"'(0"#*''$#*(WLB0(( W%D*+&2*&#(L>>C#4*C04*'>((WLd( W%D*+&2*&#(L\&*/(d*4$-'*(WL3W( W+%,&/(L1*+"#$%&.(3%+O$&5(W+%,1(512(( 5"''%&.(1*+(2$&,#*(WUM8(( W%D*+&$&5(U+%5+"2(M"&"5*2*&#(8%,&-$'(WK8( !)0)(g%4&(GJ(W'*&&(K*.*"+-4(8*&#*+(W0)(( W*&*+"'(0*+D$-*.()/2$&$.#+"#$%&(W0b( W+%,&/(0,11%+#(bH,$12*&#(

W+%,&/(0*+D$-$&5(bH,$12*&#(W%D*+&2*&#(0,11'$*/(bH,$12*&#(

W0I8( !)0)(W%//"+/(01"-*(I'$54#(8*&#*+(

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NASA-STD 8709.22 with Change 1 (

?;(%>(?@A(

Acronym Term WBL( W*%.F&-4+%&%,.(B+"&.>*+(L+E$#(G)7(( G*"#()-#,"#*/(7*D$-*(G)aB( G$54'F()--*'*+"#*/(a$>*(B*.#$&5(G)!( GF/+%]F'("22%&$,2(&$#+"#*(G)08( G"_"+/()&"'F.$.(0,E(8%22$##**(G)00( G$54'F()--*'*+"#*/(0#+*..(0-+**&$&5(G)B^( G"_"+/()&"'F.$.(B+"-O$&5(^&/*](G)lLU( G"_"+/("&/(L1*+"E$'$#F(0#,/F(

G"_"+/%,.(L1*+"#$%&(Gb( G$54(b]1'%.$D*(Gb)( G,2"&Cb++%+()&"'F.$.(GbL(( G$54(b"+#4(L+E$#(GI7( G"_"+/%,.(I+"52*&#(7$.#"&-*(GaBK( G"_"+/(a$.#(B+"-O$&5(K*-%+/(GLU(( G"_"+/%,.(L1*+"#$&5(U+%-*/,+*(

G"_"+/%,.(L1*+"#$&5(U*+2$#(GL3^( !)0)(G*"/H,"+#*+.(L>>$-*(3%+O(^&.#+,-#$%&(GUM( G$54(U*+>%+2"&-*(M"5"_$&*(GZ( G*"/H,"+#*+.(GZK( G"&/'$&5(Z,"'$#$*.(K"#$&5(GK( G"_"+/(K*1%+#((GK)( G,2"&(K*'$"E$'$#F()&"'F.$.(GK8U( G,2"&CK"#$&5(8*+#$>$-"#$%&(U"-O"5*(GKK( G,2"&(K"#$&5(K*H,$+*2*&#.(GKd( G"_"+/(K*.%',#$%&(d*+$>$-"#$%&(G0U7( G%2*'"&/(0*-,+$#F(U+*.$/*&#$"'(7$+*-#$D*(Gd)8(( G*"#$&56(d*&#$'"#$&56("&/()$+(8%&/$#$%&$&5(^)(( ^&/*1*&/*&#()..*..2*&#((^)78(( ^&#*+C)5*&-F(01"-*(7*E+$.(8%%+/$&"#$%&(8%22$##**(^)b)( ^&#*+&"#$%&"'()#%2$-(b&*+5F()5*&-F(^)LU( ^&#*+C8*&#*+()$+-+">#(L1*+"#$%&.(U"&*'(^)B)( ^&#*+&"#$%&"'()$+(B+"&.1%+#()..%-$"#$%&(^)3( ^&()--%+/"&-*(3$#4(^S7( ^&4"E$#*/(S,$'/$&5(7$.#"&-*(^SK( ^&#*5+"#*/(S".*'$&*(K*D$*\(^8)( ^&/*1*&/*&#(8%.#()&"'F.$.(^8)L( ^&#*+&"#$%&"'(8$D$'()D$"#$%&(L+5"&$_"#$%&(^8b( ^&/*1*&/*&#(8%.#(b.#$2"#*(^b8(( ^&#*+&"#$%&"'(b'*-#+%#*-4&$-"'(8%22$..$%&(^bbb( ^&.#$#,#*(%>(b'*-#+$-"'("&/(b'*-#+%&$-.(b&5$&**+.(^IL( ^&.#$#,#$%&"'R(I"-$'$#FRL1*+"#$%&"'(^I0B)(( ^&#*+&"#$%&"'(I$+*(0*+D$-*(B+"$&$&5()..%-$"#$%&(^W088(( ^&#*+5+"&,'"+(0#+*..(8%++%.$%&(8+"-O$&5(

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NASA-STD 8709.22 with Change 1 (

?=(%>(?@A(

Acronym Term ^Gb( ^&.*&.$#$D*(G$54(b]1'%.$D*.(^a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dYd( ^&/*1*&/*&#(d*+$>$-"#$%&("&/(d"'$/"#$%&(g^ML( g,1$#*+(^-F(M%%&.(L+E$#*+(gUC?:( G$54(7*&.$#F(4F/+%-"+E%&(>,*'(X-%21%.*/(.%'*'F(%>(*]%#*#+"4F/+%/$(

X-F-'%1*&#"/$*&*[[(gU7(( g%4&.%&(U%'$-F(7$+*-#$D*(gUa( g*#(U+%1,'.$%&(a"E%+"#%+F(gUK(( g%4&.%&(U+%-*/,+"'(K*H,$+*2*&#.(g08( !)0)(g%4&.%&(01"-*(8*&#*+(g30B( g"2*.(3*EE(01"-*(B*'*.-%1*(m7U( m*F(7*-$.$%&(U%$&#(O5(( O$'%5+"2(mGS(( m*&&*/F(G"&/E%%O(OG_( O$'%4*+#_(mM( m&%\'*/5*(M"&"5*2*&#(O2( O$'%2*#*+(O2R4+(( O$'%2*#*+R4%,+(OU"(( O$'%1".-"'(m08( !)0)(g%4&(IJ(m*&&*/F(01"-*(8*&#*+(Od( O$'%D%'#.(Od)(( O$'%D%'#"21*+*(a( '$#*+('R2$&(( '$#*+.(1*+(2$&,#*(a)7bb( a,&"+()#2%.14*+*("&/(7,.#(b&D$+%&2*&#"'(b]1'%+*+(a)^K( a$H,$/()$+(a"K8( !)0)(a"&5'*F(K*.*"+-4(8*&#*+(

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NASA-STD 8709.22 with Change 1 (

?V(%>(?@A(

Acronym Term a88( a",&-4(8%22$#(8+$#*+$"(

a",&-4(8%&#+%'(8*&#*+(a$>*C8F-'*(8%.#(

a7b( a*"/(7$.-$1'$&*(b&5$&**+(a$>#$&5(7*D$-*.("&/(bH,$12*&#(

a7b8( a$>#$&5(7*D$-*.("&/(bH,$12*&#(8%22$##**(a7bM( a$>#$&5(7*D$-*.("&/(bH,$12*&#(M"&"5*+(ab7(( a$54#(b2$##$&5(7$%/*(abL( a%\(b"+#4(L+E$#(aG9( a$H,$/(GF/+%5*&(aa^0( a*..%&.(a*"+&*/(^&>%+2"#$%&(0F.#*2(a!W( a$H,*>$*/(!"#,+"'(W".(aL7( a*##*+(%>(7*'*5"#$%&(XZ,"'$#F()..,+"&-*[(aLBL( a%-OC%,#RB"5C%,#(aLn( a$H,$/(L]F5*&(aU( a$H,$/(U*#+%'*,2(aKe(( a$&*(K*1'"-*"E'*(e&$#(a0UM( a",&-4(0*+D$-*.(U+%5+"2(M"&"5*+(a0KK( a",&-4(0$#*(K*"/$&*..(K*D$*\(M)I( !)0)(M$-4",/()..*2E'F(I"-$'$#F(M)3U(( M"]$2,2()''%\"E'*(3%+O$&5(U+*..,+*(2"]BBK( M"]$2,2(B$2*(#%(K*1"$+(M8b( M"]$2,2(8+*/$E'*(bD*&#(M8K(( M$..$%&(8%&-*1#(K*D$*\(M7))(( M$..$%&(7$+*-#%+"#*()..%-$"#*()/2$&$.#+"#%+(M7MB(( M$&$2,2(7*.$5&(M*#"'(B*21*+"#,+*(M7UM8( M$..$%&(7$+*-#%+"#*(U+%5+"2(M"&"5*2*&#(8%,&-$'(M7K( M$..$%&(7*>$&$#$%&(K*D$*\(M7B(( M*"&(7%\&#$2*(Mb( M*#*%+%$/(b&D$+%&2*&#(Mbad( M*/$,2(X8'"..[(b]1*&/"E'*(a",&-4(d*4$-'*(MbM( M*#*%+%$/(b&5$&**+$&5(M%/*'((MbL(( M*/$,2(b"+#4(L+E$#(

M*#*%+%$/(b&D$+%&2*&#(L>>$-*(MbK( M"+.(b]1'%+"#$%&(K%D*+(MI( M,'#$1'F$&5(I"-#%+(MGb( M"#*+$"'.(G"&/'$&5(bH,$12*&#(M^( M$.4"1(^&D*.#$5"#%+(M^S( M$.4"1(^&D*.#$5"#$%&(S%"+/(M^7bn( M*/$,2(8'"..(b]1'%+*+(M^aC0B7( M$'$#"+F(0#"&/"+/(2$&(( 2$&,#*.(M^B( M$.4"1(^&D*.#$5"#$%&(B*"2(

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NASA-STD 8709.22 with Change 1 (

?A(%>(?@A(

Acronym Term Mab( M"]$2,2(a$O*'$4%%/(b.#$2"#$%&(MM( M$-+%CM*#*%+%$/(M2"]8B(( M"]$2,2(8%++*-#$D*(M"$&#*&"&-*(B$2*(MMG(( M%&%2*#4F'4F/+"_$&*(MML7( M$-+%CM*#*%+%$/(L+E$#"'(7*E+$.((ML)(( M*2%+"&/,2(%>()5+**2*&#((ML!( M$]*/(L]$/*.(L>(!$#+%5*&(MLB0( M%/$>$*/(L>>CB4*C04*'>(MLe( M*2%+"&/,2(%>(e&/*+.#"&/$&5(214(( 2$'*R4%,+(MKS( M"#*+$"'(K*D$*\(S%"+/(MKL( M"+.(K*-%&&"$.."&-*(L+E$#*+(MKK( M$..$%&(K*"/$&*..(K*D$*\(M070( M"#*+$"'(0">*#F(7"#"(04**#(M0I8( M"+.4"''(01"-*(I'$54#(8*&#*+(M0L( M$..$%&(0,11%+#(L>>$-*(M0U0U( M$..$'*(0F.#*2(U+*'",&-4(0">*#F(U"-O"5*(MBSI( M*"&(B$2*(S*#\**&(I"$',+*.(MBBI( M*"&(B$2*(B%(I"$',+*(MBBK( M*"&(B$2*(B%(K*1"$+(

M*"&(B$2*(B%(K*.#%+*(Md)( d$&F'"-*#F'*&*(M3K( M%+"'*6(3*'>"+*6(K*-+*"#$%&(!))K0( !)0)()D$"#$%&()&%2"'F(K*1%+#$&5(0F.#*2(!)^80( !%+#4()2*+$-"&(^&/,.#+$"'(8'"..$>$-"#$%&(0F.#*2(!)K( !%&C)/D%-"#*(K*D$*\(!)0)( !"#$%&"'()*+%&",#$-.("&/(01"-*()/2$&$.#+"#$%&(!)0)(0U(( !)0)(01*-$"'(U,E'$-"#$%&(!)0)(BM(( !)0)(B*-4&$-"'(M*2%+"&/,2((!)0)C0B7( !)0)(0#"&/"+/(!SSUd^(( !"#$%&"'(S%"+/(%>(S%$'*+("&/(U+*..,+*(d*..*'(^&.1*-#%+.(!S^8(( !"#$%&"'(S%"+/(^&.1*-#$%&(8%/*(!Sa(( !*,#+"'(S,%F"&-F(a"E%+"#%+F(!8)0UW( !)0)(8%&#+"-#()/2$&$.#+"#$%&(0*+D$-*.("&/(),/$#(U%'$-F(W+%,1(!80(( !"#$%&"'(8%&.*&.,.(8%/*.("&/(0#"&/"+/.(!7b( !%&/*.#+,-#$D*(bD"',"#$%&(!7B( !%&/*.#+,-#$D*(B*.#$&5(!b8(( !"#$%&"'(b'*-#+$-"'(8%/*(!bM)(( !"#$%&"'(b'*-#+$-"'(M"&,>"-#,+*+.()..%-$"#$%&(!bU)(( !"#$%&"'(b&D$+%&2*&#"'(U%'$-F()-#(!bZ( !*#(b]1'%.$D*(Z,"&#$#F(!bZ)( !)0)(b&5$&**+$&5("&/(Z,"'$#F(),/$#(!b08( !)0)(b&5$&**+$&5("&/(0">*#F(8*&#*+(

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NASA-STD 8709.22 with Change 1 (

?c(%>(?@A(

Acronym Term !b3( !*#(b]1'%.$D*(3*$54#(!b3Z7( !*#(b]1'%.$D*(3*$54#(>%+(Z,"&#$#F(7$.#"&-*(!I)I( !)0)(I"2$'F()..$.#"&-*(I,&/(!I8(( !"#$%&"'(I$+*(8%/*(!Ib08( !"D"'(I"-$'$#$*.(b&5$&**+$&5(0*+D$-*(8*&#*+(!IU)(( !"#$%&"'(I$+*(U+%#*-#$%&()..%-$"#$%&(!I0(( !)0)(I*/*+"'()-H,$.$#$%&(K*5,'"#$%&(0,11'*2*&#((!I0)M(( !,-'*"+(I'$54#(0">*#F()..,+"&-*(M"&"5*+(!GSm( !)0)(G"&/E%%O(!GUU( !%&CG%2%5*&*%,.(U%$..%&(U+%-*..(!^M0(( !"#$%&"'(^&-$/*&#(M"&"5*2*&#(0F.#*2(!^L0G(( !"#$%&"'(^&.#$#,#*(>%+(L--,1"#$%&"'(0">*#F("&/(G*"'#4(!^0B(( !"#$%&"'(^&.#$#,#*(%>(0#"&/"+/.("&/(B*-4&%'%5F((!^BKLn( !$#+%5*&(L]F5*&(!M( !)0)(M*2%+"&/,2(!ML( !)0)(M"&"5*2*&#(L>>$-*(!L7^0( !)0)(L&'$&*(7$+*-#$D*.(^&>%+2"#$%&(0F.#*2(!U7(( !)0)(U%'$-F(7$+*-#$D*(!UK( !)0)(U+%-*/,+"'(K*H,$+*2*&#.(!U0( !%2$&"'(U$1*(0$_*(!U0a(( !)0)(U"+#.(0*'*-#$%&(a$.#((!08( !)0)(0">*#F(8*&#*+(!08())L( !)0)(0">*#F(8*&#*+(),/$#.("&/()..*..2*&#.(L>>$-*(!0^( !)0)(0#"&/"+/(^&$#$"#%+(!0!( !"#$%&"'(0#%-O(!,2E*+(!0K0( !)0)(0">*#F(K*1%+#$&5(0F.#*2(!00( !)0)(0">*#F(0#"&/"+/(!0B8(( !)0)(0">*#F(B+"$&$&5(8*&#*+(!0B0( !"#$%&"'(01"-*(B+"&.1%+#"#$%&(0F.#*2(!B^0(( !"#$%&"'(B*-4&$-"'(^&>%+2"#$%&(0*+D$-*(!BL( !$#+%5*&(B*#+%]$/*(!B0S( !"#$%&"'(B+"&.1%+#"#$%&(0">*#F(S%"+/(LY0G)(( L1*+"#$&5("&/(0,11%+#(G"_"+/()&"'F.$.(L8b( L>>$-*(%>(#4*(84$*>(b&5$&**+(L8GML( L>>$-*(%>(#4*(84$*>(G*"'#4("&/(M*/$-"'(L>>$-*+(L7( L+E$#"'(7*E+$.(L7)(( L+E$#"'(7*E+$.()..*..2*&#(L7)K(( L+E$#"'(7*E+$.()..*..2*&#(K*1%+#(L7UL( !)0)(L+E$#"'(7*E+$.(U+%5+"2(L>>$-*(Lb( LE`*-#$D*(bD$/*&-*(LbM(( L+$5$&"'(bH,$12*&#(M"&,>"-#,+*+(LbU(( L1*+"#$%&.("&/(b&5$&**+$&5(U"&*'(

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NASA-STD 8709.22 with Change 1 (

9:(%>(?@A(

Acronym Term LbK( L>>$-*(%>(b]#*+&"'(K*'"#$%&.(LGL( L>>$-*(%>(G*"/H,"+#*+.(L1*+"#$%&.(L^W(( L>>$-*(%>(^&.1*-#%+(W*&*+"'(LgB(( L&C#4*Cg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mM0( U+%-*..(S".*/(M$..$%&()..,+"&-*(C(m&%\'*/5*(M"&"5*2*&#(0F.#*2(U-( U+%E"E$'$#F(%>(8".,"'#F(U8)( U+%5+"2(8%22$#2*&#()5+**2*&#(

U4F.$-"'(8%&>$5,+"#$%&(),/$#(U8b( U+%5+"2RU+%`*-#(84$*>(b&5$&**+(U80)(( U%\*+(8+"&*("&/(04%D*'()..%-$"#$%&(U7R!08( U+*.$/*&#$"'(7$+*-#$D*R!"#$%&"'(0*-,+$#F(8%,&-$'(U77( U+%5+"2(7*.-+$1#$%&(7%-,2*&#(U7I( U+%E"E$'$#F(7*&.$#F(I,&-#$%&(U7K(( U+*'$2$&"+F(7*.$5&(K*D$*\((Uba( U*+2$..$E'*(b]1%.,+*(a$2$#(UbU( U*+>%+2"&-*(bD"',"#$%&(U+%>$'*(UbK( U+*'$&$&"+F(b&5$&**+$&5(K*1%+#(Ub0( U%#*&#$"'(b]1'%.$D*(0$#*(UbB!( U*&#"*+F#4+$#%'(#*#+"&$#+"#*(UG)( U+*'$2$&"+F(G"_"+/()&"'F.$.(

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NASA-STD 8709.22 with Change 1 (

9?(%>(?@A(

Acronym Term UGa( U+*'$2$&"+F(G"_"+/(a$.#(U^( U+$&-$1"'(^&D*.#$5"#%+(U^d( U%.#(^&/$-"#%+(d"'D*(Ua(( U,E'$-(a"\(UM( U+%5+"2(M"&"5*+(

U+%`*-#(M"&"5*+(U*+>%+2"&-*(M*".,+*(

UM8(( U+%5+"2(M"&"5*2*&#(8%,&-$'(UL8( U%$&#(%>(8%&#"-#(ULa( U*#+%'*,26(L$'6(a,E+$-"&#(ULd( U+$D"#*'F(L\&*/(d*4$-'*(UUb(( U*+.%&"'(U+%#*-#$D*(bH,$12*&#(UUM(( U"+#.(U*+(M$''$%&(UUL( U'"&*#"+F(U+%#*-#$%&(L>>$-*+(UZ)( U+%-,+*2*&#(Z,"'$#F()..,+"&-*(UZ)0U( U+%5+"2RU+%`*-#(Z,"'$#F()..,+"&-*(0,+D*$''"&-*(U'"&(UK( U*+>%+2"&-*(K*H,$+*2*&#(

U+%E'*2(K*1%+#(UK)( U+%E"E$'$.#$-(K$.O()..*..2*&#(UK)8)(( U+%E'*2(K*1%+#$&5("&/(8%++*-#$D*()-#$%&((UKS( U+%E'*2(K*D$*\(S%"+/(UK7(( U+*..,+*(K*'$*>(7*D$-*((UKI( U,'.*(K*1*#$#$%&(I+*H,*&-F(UKU( U*+.%&&*'(K*'$"E$'$#F(U+%5+"2(UKB( U'"#$&,2(K*.$.#"&-*(B4*+2%2*#*+(U0)K( U+*'$2$&"+F(0">*#F()&"'F.$.(K*1%+#(U0^( U%,&/.(1*+(0H,"+*(^&-4(U0^)(( U%,&/.(1*+(0H,"+*(^&-4()-#,"'(U0^W(( U%,&/.(1*+(0H,"+*(^&-4(W",5*(U0M(( U+*..,+*(0F.#*2.(M"&"5*+(

U+%-,+*2*&#(0#+"#*5F(M**#$&5(U0M( U+%-*..(0">*#F(M"&"5*2*&#(U0U(( U+%5+"2RU+%`*-#(0,+D*$''"&-*(U'"&(U0KU(( U"F'%"/(0">*#F(K*D$*\(U"&*'((U0d(( U+*..,+*(0">*#F(d"'D*(U03W( U"F'%"/(0">*#F(3%+O$&5(W+%,1(UBK( U,E'$-(B+">>$-(K%,#*(Ud0(( U+*..,+*(d*..*'.("&/(U+*..,+$_*/(0F.#*2.(U3)( U+$&#*/(3$+$&5()..*2E'F(U3S( U+$&#*/(3$+$&5(S%"+/(U3U( U'".#$-$_*/(34$#*(U4%.14%+,.(Z)( Z,"'$#F()..,+"&-*(Z))K( Z,"'$#F(),/$#6()..*..2*&#6("&/(K*D$*\(

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NASA-STD 8709.22 with Change 1 (

99(%>(?@A(

Acronym Term Z)0)K( Z,"'$#F("&/(0">*#F()-4$*D*2*&#(K*-%5&$#$%&(Z)0U( Z,"'$#F()..,+"&-*(0,+D*$''"&-*(U'"&(Z8( Z,"'$#F(8%&#+%'(Z7( Z,"&#$#F(7$.#"&-*(ZUa( Z,"'$>$*/(U+%/,-#.(a$.#(KYM(( K*'$"E$'$#F("&/(M"$&#"$&"E$'$#F(K)8(( K$.O()--*1#"&-*(8%/*(

K$.O()..*..2*&#(8%/*((K)788( K"/$%'%5$-"'(8%&#+%'(8*&#*+(K)M( K*'$"E$'$#F6()D"$'"E$'$#F6(M"$&#"$&"E$'$#F(KS7( K*'$"E$'$#F(S'%-O(7$"5+"2((K88(( K"&5*(8%22"&/*+.(8%,&-$'(K8M(( K*'$"E$'$#F(8*&#*+*/(M"$&#*&"&-*(K7n( 8F-'%#+$2*#4,'*&*#+$&$#+"2$&*(X?6@6;C#+$&$#+%1*+4F/+%C?6@6;C#+$"#$&*(

X-F-'%&$#*[(Kb7))( K*H,$+*2*&#.(I'%\(7%\&("&/(0M)(b&5$&**+$&5(7*.$5&(),/$#.("&/(

)..*..2*&#.(KI( K"/$%(I+*H,*&-F(KIU(( K*H,*.#(>%+(U+%1%."'.(KG( K*'"#$D*(G,2$/$#F(K^7M( K$.OC^&>%+2*/(7*-$.$%&(M"O$&5(Kad( K*,."E'*(a",&-4(d*4$-'*(KM( K$.O(M"&"5*2*&#(KMU(( K$.O(M"&"5*2*&#(U'"&(KM0(( K%%#(M*"&(0H,"+*(KUC?( K%-O*#(1+%1*''"&#(X+%-O*#C5+"/*(1+%1*''"&#(o(O*+%.*&*[(KUC9( K%-O*#(1+%1*''"&#(X1+%-*..*/(KU?(O*+%.*&*[(KU0I( K%#"#$%&6(U+%-*..$&56("&/(0,+5*(I"-$'$#F(K0M( K"&5*(0">*#F(M"&,"'(K0L( K"&5*(0">*#F(L>>$-*+(K0KMU( K"&5*(0">*#F(K$.O(M"&"5*2*&#(U'"&(0Y)( 0">*()&/()+2(0)( 0%>#\"+*()..,+"&-*(0))K^0( 0,+D*F.6(),/$#.6()..*..2*&#.6("&/(K*D$*\.(^&>%+2"#$%&(0F.#*2(0)b(( 0%-$*#F(%>(),#%2%#$D*(b&5$&**+.(^&#*+&"#$%&"'(

0%>#\"+*()..,+"&-*(b&5$&**+((0)M( 0%>#\"+*()..,+"&-*(M"&"5*+(0)K(( 0">*#F()..*..2*&#(K*1%+#6(0">*#F()&"'F.$.(K*1%+#(0)K7( 0">*#F("&/()..,+"&-*(K*H,$+*2*&#.(7$D$.$%&(0)0(( 0">*#F()&"'F.$.(0,22"+F(0Se( 0*&.$#$D*(E,#(e&-'"..$>$*/(08S)( 0*'>C8%&#"$&*/(S+*"#4$&5()11"+"#,.(087(( 0%,+-*(8%&#+%'(7+"\$&5(

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NASA-STD 8709.22 with Change 1 (

9@(%>(?@A(

Acronym Term 08W( 0#%+"5*(8%21"#$E$'$#F(W+%,1(08eS)(( 0*'>C8%&#"$&*/(e&/*+\"#*+(S+*"#4$&5()11"+"#,.(07^( 02%O*(7*D*'%12*&#(^&/*](07L( 0#"&/"+/.(7*D*'%1$&5(L+5"&$_"#$%&.(07K( 0F.#*2(7*>$&$#$%&(K*D$*\(0bS( 0%,+-*(bD"',"#$%&(S%"+/(0b^(( 0%>#\"+*(b&5$&**+$&5(^&.#$#,#*(0bad( 02"''(X8'"..[(b]1*&/"E'*(a",&-4(d*4$-'*.(0bMU( 0F.#*2.(b&5$&**+$&5(M"&"5*2*&#(U'"&(0bUU( 0F.#*2.(b>>*-#$D*&*..(U+%5+"2(U'"&(0bK( 0">*#F(bD"',"#$%&(K*1%+#(0IU( 0$&5'*(I"$',+*(U%$&#(.>,(( 0%'"+(I',](e&$#(0G)( 0F.#*2(G"_"+/()&"'F.$.(0Gb( 0">*#F6(G*"'#46("&/(b&D$+%&2*&#(0^K( 0F.#*2(^&#*5+"#$%&(K*D$*\(0M)( 0">*#F("&/(M$..$%&()..,+"&-*(0M)KB0( 0">*#F("&/(M$..$%&()..,+"&-*(K*H,$+*2*&#.(B+"-O$&5(0F.#*2(0Mb( 0,E`*-#(M"##*+(b]1*+#.(0Mbn( 02"''(b]1'%+*+(0ML(( 0F.#*2.(M"&"5*2*&#(L>>$-*(0M0K( 0">*#F("&/(M$..$%&(0,--*..(K*D$*\(0LM7( 01"-*(L1*+"#$%&.(M$..$%&(7$+*-#%+"#*(0LU( 0#"&/"+/(L1*+"#$&5(U+%-*/,+*(0L3(( 0#"#*2*&#(%>(3%+O(0CU( 0*D*+$#FCU+%E"E$'$#F(0Ub80^!B)8B(( 01*-$>$-"#$%&.(m*1#(^&#"-#(0UI(( 0$&5'*(U%$&#(I"$',+*(0Z)(( 0%>#\"+*(Z,"'$#F()..,+"&-*(0KYZ)(( 0">*#F6(K*'$"E$'$#F6("&/(Z,"'$#F()..,+"&-*(0KS( 0%'$/(K%-O*#(S%%.#*+(0KM( 0%'$/(K%-O*#(M%#%+.(0KMYZ)( 0">*#F6(K*'$"E$'$#F6(M"$&#"$&"E$'$#F6("&/(Z,"'$#F()..,+"&-*(0KK( 0F.#*2.(K*H,$+*2*&#.(K*D$*\(00)b(( 0M)(0%>#\"+*()..,+"&-*(b&5$&**+((008( !)0)(0#*&&$.(01"-*(8*&#*+(0070(( 0,+>"-*(0,11'$*/(7$D$&5(0F.#*2(00b(( 0F.#*2(0">*#F(b&5$&**+((00G)( 0,E(0F.#*2(G"_"+/()&"'F.$.(00!(( 01"-*(0,+D*$''"&-*(!*#\%+O(00L( 0*2$C0F&-4+%&%,.(L+E$#((

0,&(0F&-4+%&%,.(L+E$#(00U( 01"-*(04,##'*(U+%5+"2(

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NASA-STD 8709.22 with Change 1 (

9<(%>(?@A(

Acronym Term 00UU( 0F.#*2(0">*#F(U+%5+"2(U'"&(00BU( 0F.#*2(0">*#F(B*-4&$-"'(U'"&(0B)KB( !)0)(0#"&/"+/.("&/(B*-4&$-"'()..$.#"&-*(K*.%,+-*(B%%'(0B7(( 0#"&/"+/((0Bb(( 01*-$"'(B*.#(bH,$12*&#(0B08(( 0-$*&#$>$-("&/(B*-4&$-"'(0,E-%22$##**(03( 0%>#\"+*(BYb(( B*.#("&/(bD"',"#$%&(B)(( B*-4&$-"'(),#4%+$#F(BS7( B%(S*(7*#*+2$&*/(Bb)( B+$*#4F'("',2$&,2(X"O"Q(Bb)a[(BbS( B+$*#4%]F(E,#"&*(BIb( B*#+">',%+%*#4F'*&*(BGI( B*#+"4F/+%>,+"&(B^M( B*-4&$-"'(^&#*+-4"&5*(M**#$&5(BMa( B%#"'(M"..(a%..(B!B(( B+$&$#+%#%',*&*(BU)( B4$-O*&*/(UF+%14%+$-()5*&#(BKK(( B*.#(K*"/$&*..(K*D$*\(BKKS(( B*.#(K*"/$&*..(K*D$*\(S%"+/(eJ0J8J(( e&$#*/(0#"#*.(8%/*(e)0( e&2"&&*/()*+$"'(0F.#*2(e)d(( e&$&4"E$#*/()*+$"'(d*4$-'*(eS8( e&$>%+2(S,$'/$&5(8%/*(e7MG( e&.F22*#+$-"'(7$2*#4F'4F/+"_$&*(eI)0( e&$>%+2(I*/*+"'()--*..$E$'$#F(0#"&/"+/(eI8( e&$>%+2(I$+*(8%/*(ea(( e&/*+\+$#*+.(a"E%+"#%+$*.(^&-%+1%+"#*/(eM8( e&$>%+2(M*-4"&$-"'(8%/*(eMa(( e&$>$*/(M%/*'$&5(a"&5,"5*((e!L( e&$#*/(!"#$%&.(L+5"&$_"#$%&(e0)I( e&$#*/(0#"#*.()$+(I%+-*(e0)K( e1/"#*/(0">*#F()&"'F.$.(K*1%+#(e0W( e&$#*/(0#"#*.(W%D*+&2*&#(e00BK)B8LM( e&$#*/(0#"#*.(0#+"#*5$-(8%22"&/(ed( e'#+"D$%'*#(dYd(( d*+$>$-"#$%&("&/(d"'$/"#$%&(d)IS( d"&/*&E*+5()$+(I%+-*(S".*(d80( d%',&#"+F(8%&.*&.,.(0#"&/"+/(dUU( d%',&#"+F(U+%#*-#$%&(U+%5+"2(3S0( 3%+O(S+*"O/%\&(0#+,-#,+*(3II( !)0)(3"''%1.(I'$54#(I"-$'$#F(

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NASA-STD 8709.22 with Change 1 (

9;(%>(?@A(

Acronym Term 3U( 34$#*(U4%.14%+,.(300G( 34$#*(0"&/.(01"-*(G"+E%+(30BI( !)0)(34$#*(0"&/.(B*.#(I"-$'$#F(

(

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NASA-STD 8709.22 with Change 1 (

9=(%>(?@A(

@J9 Definitions

Notes on the definitions contained in this section:

1) Definitions with a defining document listed in the below table were previously approved for use in the current version of that document.

2) When two or more defining documents are listed, the document listed first is the primary source of the definition.

3) Definitions which are listed with numbers preceding each definition for that term are separate uses/definitions of the term and, as a result, have separate definitions and defining documents. If no defining document is listed, the definition has not been baselined in a previously published document.

4) If a parenthetical with curly brackets “{}” follows the name of a term, then that definition is specific to the listed discipline, function, or context within NASA. If no parenthetical is used, the definition applies across NASA. Round brackets “()” indicate abbreviations of the term or other amplifying information.

(

Term Definition Defining

Document and Paragraph

)E%+#(pG,2"&(01"-*(I'$54#q(

B4*(>%+-*/(*"+'F(+*#,+&(%>(#4*(-+*\(#%(b"+#4(\4*&(>"$',+*.(%+(#4*(*]$.#*&-*(%>(,&-%&#+%''*/(-"#".#+%14$-(4"_"+/.(1+*D*&#(-%&#$&,"#$%&(%>(#4*(2$..$%&(1+%>$'*("&/("(+*#,+&(#%(b"+#4($.(+*H,$+*/(>%+(-+*\(.,+D$D"'J((B4*(-+*\($.(.">*'F(+*#,+&*/(#%(b"+#4($&(#4*(.1"-*(.F.#*2(&%2$&"''F(,.*/(>%+(*&#+F("&/('"&/$&5R#%,-4/%\&J((X)'.%(+*>*++*/(#%(".(rM$..$%&()E%+#J[(

!UK(AV:;J9S6()11*&/$]()(

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!)0)C0B7C(AV?cJ?9(

)--*'*+"#*/(a$>*(B*.#$&5(

)(#*.#$&5(.#+"#*5F(\4*+*EF(,&$#.("+*(#*.#*/("#(.#+*..(%+(#*21*+"#,+*('*D*'.(4$54*+(#4"&(,.*(.#+*..(%+(#*21*+"#,+*($&(%+/*+(#%(>"-$'$#"#*(>"$',+*.($&("(#$2*'F(2"&&*+J((B4*(+*.,'#.(%>(#4*.*(#*.#.("+*(#4*&("&"'F_*/($&(.,-4("(2"&&*+(.%(#4"#("(1+%>$'*(%>(#4*(>"$',+*(E*4"D$%+(%>(#4*(1+%/,-#.("#(#4*(,.*(.#+*..*.(%+(#*21*+"#,+*.(-"&(E*(/*#*+2$&*/(E".*/(%&(#4*(E*4"D$%+(%>(#4*(1+%/,-#.("#(#4*("--*'*+"#*/(.#+*..*.J(

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!)0)C0B7(AV:cJ9:(

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NASA-STD 8709.22 with Change 1 (

9V(%>(?@A(

Term Definition Defining

Document and Paragraph

)--*1#"&-*(B*.#(( )(#*.#(-%&/,-#*/(,&/*+(.1*-$>$*/(-%&/$#$%&.6(,.$&5(/*'$D*+*/(%+(/*'$D*+"E'*($#*2.6($&(%+/*+(#%(/*#*+2$&*(#4*($#*2T.(-%21'$"&-*(\$#4(.1*-$>$*/(+*H,$+*2*&#.J((X^&-',/*.("--*1#"&-*(%>(>$+.#(1+%/,-#$%&(,&$#.J[(

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NASA-STD 8709.22 with Change 1 (

9A(%>(?@A(

Term Definition Defining

Document and Paragraph

)$+-+">#(M$.4"1( )&("$+-+">#(2$.4"1($.("&(%--,++*&-*("..%-$"#*/(\$#4(#4*(%1*+"#$%&(%>("&("$+-+">#6(\4$-4(#"O*.(1'"-*(E*#\**&(#4*(#$2*("&F(1*+.%&(E%"+/.(#4*("$+-+">#(\$#4(#4*($&#*&#$%&(%>(>'$54#("&/("''(.,-4(1*+.%&.(4"D*(/$.*2E"+O*/6("&/($&(\4$-4("&F(1*+.%&(.,>>*+.("(>"#"'$#F(%+(.*+$%,.($&`,+F6(%+($&(\4$-4(#4*("$+-+">#(+*-*$D*.(.,E.#"&#$"'(/"2"5*J(

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NASA-STD 8709.22 with Change 1 (

9c(%>(?@A(

Term Definition Defining

Document and Paragraph

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NASA-STD 8709.22 with Change 1 (

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NASA-STD 8709.22 with Change 1 (

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Term Definition Defining

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NASA-STD 8709.22 with Change 1 (

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NASA-STD 8709.22 with Change 1 (

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NASA-STD 8709.22 with Change 1 (

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NASA-STD 8709.22 with Change 1 (

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NASA-STD 8709.22 with Change 1 (

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NASA-STD 8709.22 with Change 1 (

<A(%>(?@A(

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NASA-STD 8709.22 with Change 1 (

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NASA-STD 8709.22 with Change 1 (

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NASA-STD 8709.22 with Change 1 (

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