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A

AB —  AD —  AF —  AH —  AN —  AR —  AT —  AU

ACRONYM

DEFINITION

CONTRIBUTOR

A&A	Astronomy and Astrophysics (Journal)	Goddard
A&AS	Astronomy and Astrophysics Supplement (Journal)	Goddard
A&E	Architect-Engineer	Goddard
A&R	Automation & Robotics	CASI
A&SG	Avionics and Surveillance Group	Goddard
A&V	Acceptance and Verification	Goddard
A&V	Assembly and Verification	Goddard
A/D	Analog to Digital	Goddard
A/O	Atomic Weight Percent	CASI
A/SA	Arid/Semi-Arid	Goddard
AA	Associate Administrator	Goddard
AA&HP	Aerodynamics, Aerothermodynamics, and Hypersonic Propulsion	Langley
AAAS	American Association for the Advancement of Science	CASI
AAAV	Advanced Amphibious Assault Vehicle	CASI
AAB	Army Aviation Board, Fort Rucker, AL	CASI
AAC	Aeronautics Advisory Council	Langley
AAC	Advanced Airspace Concept	CASI
AACB	Aeronautics and Astronautics Coordinating Board	CASI
AACM	Average Absolute Control Movement	CASI
AACS	Attitude and Articulation Control Subsystem	CASI
AACS	Automated Airspace Computer System	Goddard
AADB	Army Air Defense Board, Fort Bliss, TX	CASI
AADSF	Advanced Automated Directional Solidification Furnace	CASI
AAE	Average Absolute Error	CASI
AAEE	Aeroplane and Armament Experiment Establishment (Great Britain)	CASI
AAESWB	Army Airborne, Electronics and Special Warfare Board, Fort Bragg NC	CASI
AAFB	Andrews Air Force Base	Goddard
AAFE	Advance Applications Flight Experiment Program;	CASI
AAFE	Aero Assist Flight Experiment	CASI
AAH	Advanced Attack Helicopter	CASI
AAH	Automatic Attitude Hold (Space Shuttle)	CASI
AAL	Arctic Aeromedical Lab., Fort Wainwright, AK	CASI
AAM	Application Activity Model	CASI
AAM	Atmospheric Angular Momentum	Goddard
AAOE	Airborne Antarctic Ozone Experiment	CASI
AAP	Affirmative Action Plan	CASI
AAP	Apollo Applications Program	Goddard
A-AR	Army Artillery Board, Fort Sill, OK	CASI
A-ARM	Army Armor Board, Fort Knox, KY	CASI
AAS	Advanced Automated System	Langley
AAS	American Astronautical Society	CASI
AASE	Airborne Arctic Stratospheric Expedition	CASI
AATB	Army Arctic Test Board, Fort Greely, AK	CASI
AATSR	Advanced Along-Track Scanning Radiometer (ESA)	Goddard
AATT	Advanced Air Transportation Technologies	CASI
AAUW	American Association of University Women	Langley
AAVSO	American Association of Variable Star Observers	CASI
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AB	Advanced Bus	Goddard
AB/CV	Aerobrake/Carrier Vehicle (AFE)	Langley
ABA	Aberrated Beam Analyzer	Goddard
ABACUS	Architecture and Building Aids Computer Unit	CASI
ABC	Activity Based Costing	Langley
ABCR	As Built Configuration Report	Goddard
ABF	Air Bearing Floor	Goddard
ABIL	Airborne Beacon Interference Locator	CASI
ABL	Allocated Baseline	CASI
ABL	Army Biological Labs., Frederick, MD	Goddard
ABLE	Amazon Boundary Layer Expedition	Langley
ABLE	Atmospheric Boundary Layer Experiment	Langley
ABLE	Amazon Boundary Layer Experiment	CASI
ABM	Apogee Boost Motor	CASI
ABPL	As-Built Parts List	Goddard
ABS	Oxygen A-Band Spectrometer	CASI
ABS	Acrylonitrile Butadiene Styrene	Goddard
ABW	Antarctic Bottom Water	Goddard
AC	Alternating Current	CASI
AC	Atmospheric Corrector	Goddard
AC	Atlas Centaur (Intermediate class expendable launch vehicle)	Goddard
AC&S	Attitude Control and Stabilization	CASI
ACA	Associate Contractor Agreement	CASI
ACA	Attitude Control Assembly (Space Station)	Goddard
ACAD	Attitude Control and Determination	Goddard
ACARS	Aircraft Communications Addressing and Reporting System (IEEE)	Langley
ACARS	ARINC (Aeronautical Radio, Inc.) Communications Addressing and Reporting Systems	CASI
ACC	Aeronautics Advisory Committee	CASI
ACC	Air Combat Command	Langley
ACC	Antarctic Circumpolar Current	Goddard
ACC	Aft Cargo Carrier (Space Shuttle)	Goddard
ACCENT	Autogenetically-Controlled Cesium (or Colloid) Electro-Nuclear Thrust system	CASI
ACCESS	Advanced Cosmic-Ray Composition Experiment (Space Station)	Goddard
ACCESS	Assembly Concept for Construction of Erectable Space Structure	CASI
ACCS	Active Contamination Control System	CASI
ACD	Anti-Coincidence Detector	CASI
ACD	Architecture Control Document	Goddard
ACDS	Attitude Control and Data System	Goddard
ACDTR	Airborne Central Data Tape Recorder	CASI
ACE	Acceptance Checkout Equipment	CASI
ACE	Active Control Aircraft	CASI
ACE	Actuator Control Electronics	Goddard
ACE	ADR Control Electronics	Goddard
ACE	Advanced Composition Explorer	Goddard
ACE	Array Clamp Electronics	Goddard
ACE	Attitude Control Electronics	Goddard
ACerS	American Ceramic Society	Glenn
ACES	Acoustic Containerless Experiment System	CASI
ACES	Airspace Concept Evaluation System	CASI
ACF	Advanced Communications Facility	Langley
ACF	Autocorrelation Function	CASI
ACFS	Advanced Concepts Flight Simulator	CASI
ACGI	Advanced Computer-Generated Image	Langley
ACHE	ADR Control and Housekeeping Electronics	Goddard
ACIC	Aeronautical Chart and Information Center (AF), St. Louis, MO	CASI
ACIP	Aerodynamic Coefficient Identification Package (NASA)	Langley
ACIP	Aerodynamic Coefficient Instrumentation Package (Space Shuttle)	CASI
ACK	Acknowledge Message	Goddard
ACLS	Advance Cardiac Life Support	CASI
ACLS	Air Cushion Landing System	CASI
ACLS	Automated Control and Landing System	CASI
ACLS	Automatic Carrier Landing System	CASI
ACM	Advance Cruise Missile	CASI
ACM	Aerodynamic Configured Missile	CASI
ACM	Air Combat Maintenance	CASI
ACM	Air Combat Maneuvering	CASI
ACM	Air Conditioning Machine	CASI
ACM	Association for Computing Machinery	Langley
ACM	Augmented Counter Machine	CASI
ACO	Administrative Contracting Officer	Goddard
ACOE	Army Corps of Engineers	Goddard
ACOSS	Active Control of Space Structures	CASI
ACP	Affordable Composites for Propulsion	CASI
ACP	Alternate Command Plan	Goddard
ACP	Archive Control Process	Goddard
ACP	Area Command Post	CASI
ACPS	Attitude Control Propulsion System	CASI
ACR	Active Cavity Radiometer	Langley
ACR	Active Cavity Radar	CASI
ACRC	Assured Crew Return Capability	CASI
ACRDL	Army Chemical Research and Development Labs., Army Chemical Center, MD	CASI
ACRIM	Active Cavity Radiometer Irradiance Monitor	CASI
ACRIMSAT	Active Cavity Radiometer Irradiance Monitor Satellite	Goddard
ACRS	Automated Conflict Resolution System	Goddard
ACRV	Assured Crew Return Vehicle (Aerospace)	Langley
ACS	Advanced Camera for Surveys	Goddard
ACS	Advanced Concepts Simulator	Langley
ACS	American Chemical Society	Glenn
ACS	Attitude Control Subsystem	Goddard
ACS	Attitude Control System	Goddard
ACS/COM	Attitude Control System/Communications	CASI
ACSC	Aegis Combat Systems Center	Goddard
ACSH	Avionic and Control System Hardware	CASI
ACSIL	Admiralty Centre for Scientific Information and Liaison (Great Britain)	CASI
ACSSB	Amplitude Companded Single Sideband	CASI
ACSYS	Arctic Climate System Study	Goddard
ACT	Active Control Technology (or Technique)	Langley
ACT	Advanced Component Technologies	CASI
ACT	Advanced Composites Technology	Langley
ACT	Active Control Technology (control systems)	Goddard
ACT	Advanced Concepts Test	CASI
ACT	Attitude Control Thrusters	CASI
ACTH	Adrenocorticotropin	CASI
ACTIVE	Advanced Control Technology for Integrated Vehicles	CASI
ACTL	Automated Compatibility Test Laboratory	Goddard
ACTS	Advanced Civil Transport Simulator	Langley
ACTS	Advanced Communication Technology Satellite Program	Langley
ACTS	Advanced Communications Technology Satellite	CASI
ACV	Air Cushion Vehicle (Ground effect machine; includes hovercraft)	CASI
ACWP	Actual Cost of Work Performed	CASI
ACWP	Actual Cost of Work Performance	Goddard
ACY	Atlantic City (New Jersey) (Airport Symbol)	Langley
ACZCS	Advanced Coastal Zone Color Scanner	CASI
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AD	Analog Devices	CASI
AD	Aperture Door	Goddard
AD	Animal Development (Genetics)	Goddard
AD/AB	As-Designed versus As-Built	Goddard
ADA	Ancillary Data Access	Goddard
ADA	Array Drive Assembly	Goddard
ADA	Automatic Data Acquisition	Langley
AD-A	Automatic Gain Control (AGC)	CASI
ADABAS	Adaptable Database System	Langley
ADACS	Attitude Determination and Control Subsystem	Goddard
ADAPT	Adaptive Data Analysis and Processing Technology	Langley
ADAPT	Approach for Data Management, Archive, Protection, and Transmission	Langley
ADAS	Architecture Design and Assessment System	Langley
ADASP	Air Defense Annual Service Practice; Automatic Data and Select Program	CASI
ADASS	Astronomical Data Analysis Software and Systems	Goddard
ADB	Applications Development Branch	Goddard
ADC	Aerospace Defense Command	CASI
ADC	Affiliated Data Center	CASI
ADC	Air Defense Command, Colorado Springs, CO	CASI
ADC	Analog to Digital Converter	CASI
ADC	Automatic Deviation Control	CASI
ADCLS	Automated Data Collection and Location System	CASI
ADCS	Attitude Determination and Control System	Goddard
ADD	Architectural Design Document	CASI
ADD	Architecture Description Document	Goddard
ADD	Autonomous Dynamics Determination	Langley
ADD	Architectural Definition Document	Goddard
ADDS	Automatic Document Distribution Service	CASI
ADE	Array Drive Electronics	Goddard
ADEDS	Advance Digital Electronic Display	CASI
ADEOS	Advanced Earth Observing Satellite	CASI
ADEPT	Advanced Design Electronic Packaging Technique	Goddard
ADEU	Automatic Data Entry Unit	CASI
ADF	Automatic Direction Finding	CASI
ADI	Attitude Direction Indicator (Space Shuttle)	CASI
ADIRS	Air Data Inertial Reference System	Langley
ADISB	Australian Defense Information Services Branch	CASI
ADL	Ada Design Language	CASI
ADM	Administrative Message	Goddard
ADM	Angular Distribution Model	Goddard
admin	Administration (A publication)	Langley
ADMIN	Administration (or Administrator)	Langley
ADP	Automated Data Processing	CASI
ADP	Automatic Data Processor	CASI
ADP	Air Data Probe (Space Shuttle)	Goddard
ADP	Automatic Data Processing	Goddard
ADP/T	Automatic Data Processing and Telecommunications	Langley
ADPE	Automated Data Processing Equipment	Goddard
ADPE	Automatic Data Processing Equipment	Langley
ADR	Achievable Data Rate	CASI
ADR	Adiabatic Demagnetization Refrigerator	Goddard
ADS	Accelerator Driven System	CASI
ADS	Aerospace Data Systems	CASI
ADS	Altitude Decompression Sickness	CASI
ADS	Audio Distribution System (Space Shuttle)	CASI
ADS-B	Automatic Dependent Surveillance-Broadcast	CASI
ADSF	Advanced Directional Solidification Furnace	CASI
ADSP	Advanced Digital SAR Processor	CASI
ADT	Architectural Development Team	Goddard
ADV	Ascent/Descent Vehicles	CASI
ADVALM	Advanced Laminate Analysis Code	CASI
ADVENT	Ada Development Environment	CASI
ADVPCG	Advanced Protein Crystal Growth	CASI
AE	Atmospheric Explorer	Goddard
AE	Atmospheric Explorer (Satellite); Average Error	CASI
A-E	Architect & Engineer	Langley
AE	Ascent/Entry	Goddard
AEAP	Atmospheric Effects of Aviation Project	CASI
AEC	Architectural, Engineering, and Construction	CASI
AEC	Atomic Energy Commission, Washington, DC	Goddard
AECL	Atomic Energy of Canada, LTD.	CASI
AECMA	European Association of Aerospace Industries	Goddard
AED	Ammunition Engineering Directorate, Picatinny Arsenal, Dover, NJ	CASI
AEDC	Arnold Engineering Development Center, Arnold Airforce Station, TN	CASI
AEDP	Astrometry and Engineering Data Processing	Goddard
AEDU	Admiralty Experimental Diving Unit (Great Britain)	CASI
AEL	Admiralty Engineering Lab. (Great Britain)	CASI
AELR O	Army Electronics Logistics Research Office; see AELRDL	CASI
AELRDL	Army Electronic Research and Development Agency, Fort Monmouth, NJ	CASI
AEM	Analog Electronics Module	CASI
AEM	Analytical Electron Microscopy	Goddard
AEM Satellite	Applications Explorer Missions	CASI
AEP	Affirmative Employment Program	Langley
AEPG	Army Electronic Proving Ground Fort Huachuca, AZ	CASI
AEPI	Atmospheric Emissions Photometric Imaging	CASI
AERDA	Army Electronics Research and Development Activity (White Sands Missile Range, NM and Fort Huachuca, AZ)	CASI
AERDL	Army Engineer Research and Development Labs., Fort Belvoir, VA	CASI
AEREA	Association of European Research Establishments in Aeronautics	CASI
AERI	Atmospheric Emitted Radiance Interferometer	CASI
AEROENG	Aeronautical Engineering	CASI
AEROMED	Aerospace Medicine and Biology	CASI
AERONET	Aerosol Robotic Network	Goddard
AEROSAT	Aeronautical Communications Satellite	CASI
AESA	Active Electronically Scanned Array	CASI
AESA	Assign-and-Estimate Scheduling Algorithm	CASI
AESA	Atmospheric Effects of Stratospheric Aircraft	CASI
AESE	Airborne Electrical Support Equipment	Goddard
AESIM	Analog Electronics Simulator	Goddard
AESOP	Advanced End-to-end Simulation for Onboard Processing	CASI
AESOP	Aerodynamic Shape Optimization Program	CASI
AESOP	An Expert System for Shipboard Obscuration Prediction	CASI
AESOP	Army EMP (ElectroMagnetic-Pulse) Simulator Operations	CASI
AESOP	Automatic Engineering and Scientific Optimization Program	CASI
AESOP	Automatic Environmental Surface Observation Platforms	CASI
AESOPS	Antarctic Environment Southern Ocean Process Study	Goddard
AESP	Aerospace Education Services Program	Goddard
AET	Actual Evapo-Transpiration	Goddard
AETC	Accessory and Equipment Technical Committee	CASI
AETC	Air Education Training Command	CASI
AETD	Applied Engineering and Technology Directorate	Goddard
AEU	Analog Electronics Unit	Goddard
AEV	Air Force Operation Service (AFOS) Era Verification	CASI
AEWES	Army Engineer Waterways Experiment Station, Vicksburg, MS	CASI
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AF	Air Force	CASI