Did you ever wonder what those strange conglomerations of letters meant? Here's your chance to find out what those NASA acronyms stand for. About Space and Astronomy presents the Guide to NASA Acronyms. From generator to ground control equipment to guidance systems, find your acronym here. This page lists acronyms starting with G. For others, click on the appropriate letter above or below.

[G]

G: Giga (Billion)
G: Gravity
G: Units of Gravitational Force
G IWG: Ground Interface Working Group
G LOW: Gross Lift-Off Weight
G LOW: Ground Lift-Off Weight
G CCC: Ground Control Computer Center
G F&P: "Gases, Fluids, and Propellants"
G&A: General and Administrative
G&C: Guidance and Control
G&N: Guidance and Navigation
G&NGuidanc: and navigation
G&NS: Guidance and Navigation Subsystem
G-11: Gulfstream 11 (Shuttle Training Aircraft)
G-A: Ground-to-Air
G-G: Ground-to-Ground
G-MEM: General Memory
G-MEM: GPC-Memory
G-V: Gravity-Velocity
G/A: Ground-to-Air
G/E: Graphite Epoxy
G/G: Ground-to-Ground
G/S: Guided steering
G/T: Antenna Gain-to-Noise Temperature Ratio
G02 Ga: G02 Gaseous Oxygen
GA: Gage
GA: General Assembly
GA: Glide Angle
GA: Gyro Assembly
GA&CS: Ground Acquisition and Command Station
GAC: Ground Attitude Control
GAC: Grumman Aerospace Corporation
GACU: Ground Air Conditioning Unit
GACU: Ground Avionics Cooling Unit
GAIN: Graphic Aids for investigating Networks
GAM: Gamma
GAO: General Accounting Office
GAP: GOAL Automatic Procedure
GAPL: Group Assembly Parts List
GAS: Get-Away Special
GASPI: Guidance Attitude Space Position Indicator
GATP: Ground Acceptance/Article Test Procedure
GATT: Gate Assisted Turnoff Thyristor
GBI: Grand Bahama Island
GBL: Government Bill of Lading
GBR: Glass Bead Rating
GBS: Ground Based Software
GC: Gigacycles (1000 Megacycles)
GC: Ground Control
GC: Guidance Control
GC: Gyrocompassing
GCA: Ground Controlled Approach
GCC: Ground Communications Coordinator
GCC: Ground Control Center
GCCO: Ground Control Checkout
GCD: "Gyrc)-Compass, Desired Cluster Orientation"
GCDC: Ground Checkout Display and Control
GCDCS: Ground Checkout Display and Control System
GCE: Ground Checkout Equipment
GCF: Ground Communications Facility
GCHX: Ground Cooling Heat Exchanger
GCI: Ground Controlled Interception
GCIL: Ground Control Interface Logic
GCIL: Ground command interface logic
GCILC: Ground Command Interface Logic Controller
GCILU: Ground Control Interface Logic Unit
GCL: Ground Coolant Loop
GCL: Ground Control Landing
GCN: Ground Control Network
GCN: Ground Communications Network (A/G Worldwide Net)
GCO: Ground Checkout
GCOS: General Computer Operational System
GCOS: Ground Computer Operating System
GCR: Ground Controlled Radar
GCS: Guidance Cutoff Signal
GCS: Ground Communications System
GCTS: Gas Component Test Stand
GCTS: Ground Communication(s) Tracking System
GCU: Gyro Coupling Unit
GCU: General Control Unit
GCU: Generator Control Unit
GCU: Ground Cooling Unit
GCV: Gaseous Oxygen Control Valve
GD: Guard
GDA: Gimbal Drive Actuator/Assembly
GDBS: Generalized Data Base System
GDC: General Dynamics Convair
GDC: Gyro Display Coupler
GDP: Generalized Documentation Processor
GDS: "Goldstone, California (STDN)"
GDS: GNC Dynamic Simulator
GDSD: Ground Data SYstems Division
GDSM: Ground Data Systems Manager
GDSO: Ground Data Systems Officer
GDSSR: GDSD Staff Support Room
GDX: "Goldstone, CA (STDN Site, 2nd Antenna)"
GE: General Electric
GECALL: GCOS Program Element Name
GEDAC: General Electric Detection and Automatic Correction
GEN: "Generate, Generator"
GENOPAUSE: Geodetic Satellite in Polar Geosynchronous Orbit
GEOD: Geodetic
GEOSEPS: General Summary Edit Program
GEOSEPS: Geosynchronous Solar Electric Propulsion Stage
GERT: Graphical Evaluation and Review Technique
GES: Goddard Experiment SuPport System
GESYOT: GCOS Program Element Name
GET: Ground Elapsed Time
GETI: Ground Elapsed Time of Ignition
GETIL: Ground Elapsed Time of Landing (for TIG of
GETIL: Abort Burn)
GETS: Ground Equipment Test Sets
GF: Gage Factor
GFAE: Government Furnished Aircraft Equipment
GFAE: Government Furnished Aerospace Equipment
GFD: Government Furnished Data
GFE: Government Furnished Equipment
GFM: Government Furnished Material
GFP: Government Furnished Property
GFRP: Glass Fiber Reinforced Plastics
GFRP: Graphite Fiber Reinforced Plastics
GFS: Government Furnished Software
GFY: Government Fiscal Year
GG: Gravity Gradient
GG: Gas Generator
GH2: Gaseous Hydrogen
GH2: Gaseous hydrogen
GHA: Greenwich Hour Angle
GHA: General Housekeeping Area
GHC: Ground Half Coupling
GHX: Ground Heat Exchanger
GHe: Gaseous Helium
GHz: Gigahertz
GIA: GPC Interface Adapter
GIDEP: Government-industry Data Exchange Program
GIE: Ground Instrumentation Equipment
GIM: Generalized Information Management
GIRD: Ground Integration Requirements Document
GITG: Ground Interface Technical Group
GLAADS: Gun Low Altitude Air Defense System
GLC: Generator Line Contractor
GLD: Glide Slope
GLL: Galileo
GLP: Goal Language Processor
GLRSHLD: Glare Shield
GLS: Ground Launch Sequence (Sequencer)
GLY: Water-Glycol Mixture
GLY: Glycol
GM: Gaseous Mixture
GM: Geometric Mean
GMAL: General Electric Macro Assembly Language
GMBL: Gimbal
GMCL: Ground Measurements Command List
GMIL Sp: GMIL Spaceffight Tracking and Data Network (STDN)
GML Ge: GML General Measurement Loop
GMMC Gr: GMMC Ground Master Measurements List
GMN Go: GMN Gorman (TACAN Station)
GMT: Greenwich Mean Time
GMT Gr: GMT Greenwich Mean Time
GN Ga: GN Gain
GN&C: "Guidance, navigation and control"
GN&C Gu: "GN&C Guidance, Navigation, and Control"
GN2: Gaseous nitrogen
GN2 Ga: GN2 Gaseous Nitrogen
GNC Gu: GNC Guidance and Navigation COmPuter
GNCFTS GN: GNCFTS GN&C Flight Test Station
GNCIS GN: GNCIS GN&C Integration Simulator
GNCS Gu: GNCS Guidance and Navi-oation Control System
GNCTS GN: GNCTS GN&C Test Station
GND Gr: GND Ground
GND C/0 Gr: GND C/0 Ground Checkout
GNP Gr: GNP Gross National Product
GO Ge: GO General Order
GO2: Gaseous oxygen
GOAL Gr: GOAL Ground Operations Aerospace Language
GOC Gr: GOC Ground Operations Coordinator
GOCA Gr: GOCA Ground Operations Control Area
GOE Gr: GOE Ground Operating EquiPMent
GOES Ge: GOES Geostationary Operational Environment Satellite
GOM KS: GOM KSC Ground Operations Manager at DFRC or WSMR
GOMMS Gr: GOMMS Ground Operations and Material Management System
GOMS Gr: GOMS Ground Operations Management System
GOP Gr: GOP Ground Operations Panel
GOPG Gr: GOPG Ground Operations Planning Group
GOR Gr: GOR Ground Operations Review
GORP Gr: GORP Ground Operations Requirements Plan
GORS Gr: GORS Ground Observer RF System
GOSS Gr: GOSS Ground Operations Support System
GOWG Gr: GOWG Ground Operations Working Group
GOX Ga: "GOX Gaseous Oxygen (GO,)"
GP: Group
GP: General Purpose
GP Ge: GP General Publication (RSC)
GPA: General Purpose Amplifier
GPAS: General PurPose Airborne Simulator
GPBIM: General Purpose Buffer interface Module
GPC: General Purpose Computer
GPC: Gel Permeation Chromatograph
GPC: General-purpose computer
GPCB: GOAL Program Control Block
GPD: Gimbal Position Display
GPH: Gallons per Hour
GPI: Gimbal Position Indicator
GPI: Ground Position Indicator
GPL: General Purpose Laboratory
GPL: Goal Processing Language
GPM: Gallons per Minute
GPME: General Purpose Mission Equipment
GPRN: GOAL Test Procedure Release Notice
GPS: Global Positioning System
GPS: Gallons per Second
GPS: General Processing Subsystem
GPS: Global Positioning Satellite
GPS: Ground Power Supply
GPS: Ground Processing Simulation
GPSS: General Purpose System Simulator
GPTE: General Purpose Test Equipment
GPU: Ground Power Unit
GPUR: GOAL Test Procedure Update Request
GR: Ground R@le
GRE: Gamma Ray Explorer
GRID: Graphic Retrieval and Information Display
GRN: Green
GRO: Gamma Ray Observatory
GRTLS: Glide Return to Launch Site
GRTLS: Glide Return to Landing Site
GS: Ground Station
GS: Ground System
GS: Ground Speed
GS: Gas Servicer
GS: Glide Slope
GS: Glide slope
GSA: General Services Administration
GSAT: General Satellite (STS)
GSCU: Ground Service Cooling Unit
GSDL: Ground Software Development Laboratory
GSE: Ground Servicing Equipment
GSE: Ground Support Equipment
GSE: Ground support equipment
GSEL: Ground Support Equipment List
GSFC: "Goddard Space Flight Center (Greenbelt, MD)"
GSFC: Goddard Space Flight Center
GSI: Government Source Inspection
GSI: Glide Slope Indicator
GSI: Glide slope indicator
GSIU: Ground Standard Interface Unit
GSO: Ground Support Office
GSO: Ground Support Operations
GSO: Ground Systems Operations
GSS: Ground Support System
GSS: Ground Support Software
GSSA: Ground Support Systems Activation
GSSC: Ground Support Systems Contractor
GSSC: Ground Support Simulation Computer
GSSI: Ground Support System Integration
GST: Ground System Test
GSTAR: General Satellite (ELV)
GSTDN: Ground Spacecraft Tracking and Data Network
GSTDN: Ground Space Flight Tracking and Data Network
GSTDN: Ground space flight tracking and data network
GSTF: Ground Systems Test Flow
GSU: Gas Servicer Unit
GSVP: Ground Support Verification Plan
GT: Gyro Torque
GT: Ground Test
GT: Greater Than
GT: Ground Team
GT&A: Ground Test and Acceptance
GTA: Ground Test Access
GTA: Ground Test Article
GTA: Gas Tungsten Arc
GTA: Ground Torquing Assembly
GTC: Glycol Trim Console
GTC: Ground Test Conductor
GTCU: Ground Thermal Conditioning Unit
GTI: Ground Test Instrumentation
GTI: Grand Turk Island
GTM: Ground Team Manager
GTM: Ground Test Motor
GTS: General Test Support
GTS: GN&C Test Station
GTS: GNS Test Station
GTU: Glycol Trim Unit
GUCP: Ground Umbilical Carrier Plate
GUID: Guidance
GUIDO: Guidance Officer
GUL: GSE Utilization List
GUSB: Guided Unified S-Band
GVA: GOX Vent Arm
GVO: Gaviota (TACAN Station)
GVT: Ground Vibration Test
GVTA: Ground Vibration Test Article
GW: Gross Weight
GWA: General Work Area
GWM: Guam (STDN)
GWT: Ground Winds Tower
GYM: "Guaymas, Mexico (Remote Site)"
GYRO: Gyroscope
GYROA: Gyro A
GYROCOMP: Gyrocompassing
Geosynchron: Geosynchronous Operational Environmental Satellite
Ground Oper: Ground Operations Review Panel

For more NASA acronyms, select a letter below or at the top of the page to continue with the About Astronomy and Space Guide to NASA Acronyms.