Acronyms and Abbreviations
E
E/ED Electrical/Electronic Distribution ( e.g., system )
E&R Evasion and Recovery
E-TREC Electronic Treasury Enterprise Card ( e.g., for building access )
E3 Electromagnetic Environmental Effects
E3D Exploitation of 3-D data
EA Electronic Attack; Electrical Actuator ( e.g., for ailerons ); EAch ( e.g., unit of supply ); Enterprise Architecture
EADS Expeditionary Air Defense System; European Aeronautic Defense and Space ( Company )
EADF Enhanced Automatic Direction Finder
EADTB Extended Air Defense TestBed
EAF Expeditionary Airfield
EAGLE Extended Airborne Global Launch Evaluator; Enterprise Acquisition Gateway for Leading Edge
EAI Enterprise Application Integration
EAM Emergency Action Message
EAP Experimental Aircraft Prototype
EAR Echelon Audio Receiver
EARS Electromagnetic Aircraft Recovery System; Expendable Acoustic Remote Sensor; Effective Affordable Reusable Speech-to-text
EARV Eagle Airborne Reconnaissance System ( Malaysia )
EAS Electronic Article Surveillance; Emergency Avionics System;
EAS Emergency Alert System ( replaced EBS )
EASM Emergency Action Support Message
EATC Electric Armor Test Carrier
EATS Extended Area Tracking System
EB Electron Beam
EBCCD Electron-Bombarded Charge Coupled Device
EBCDIC Extended Binary-coded Decimal Interchange Code
EBL Electronic Bearing Line ( e.g., in electronic navigation )
e-BOC e-Borders Operations Centre ( U.K. )
EBS Emergency Broadcast System (replaced by EAS)
EC Electronic Combat ( formerly ECM ); European Community; Error Correcting; Evolutionary Computing
Electrochemical Capacitor; Electronic Commerce; Electronics & Countermeasures
ECA Extended Coverage Area
ECAC Electromagnetic Compatibility Analysis Center ( DoD )
ECAL Equipment Calibration
ECAV Enhanced Common Aero Vehicle
ECB Electrically Controlled Bifringence ( displays )
ECC Error Control Code; Error Correcting Code
ECCM Electronic Counter-Countermeasures
ECCS Electrical, Communications, and Cyber Systems ( e.g., research division of the National Science Foundation )
ECDIS Electronic Chart Display & Information System; Electronic Charting Display & Information System
ECDIS-N Electronic Chart Display & Information System - Navy
ECDL External Cavity Diode Laser
ECF European Combat Fighter
ECHO EW Environment Simulation
ECI Export Controlled Information
ECIPS Electronic Combat Integrated Pylon System
ECISAP Electronic Combat International Security Assistance Program
ECIX Electronic Component Interchange ( standard )
ECL Emitter Coupled Logic; Emitter Control Logic ( semiconductors )
ECM Electronic Countermeasures ; Electronic Combat Measures
ECMO ECM Officer
ECMES Electronic Combat Modeling & Evaluation
ECN Emergency Communications Network
ECO Electron-Coupled Oscillator; Earth-Crossing Orbit
ECP Engineering Change Proposal; Extended Coherent Processing
ECPINS Electronic Chart Precise Integrated Navigation System
ECPINS-M Electronic Chart Precise Integrated Navigation System-Military
ECR Electronic Combat & Reconnaissance; Electronic Combat Reconnaissance; Electronic Cash Register; Electronic Combat Range
ECS Environmental Control System ( e.g., component cooler )
ECSF Electronic Combat Support Flight
ECTS Electronic Combat Training System
ECU Emitter Classification Unit; Electronic Conversion Unit
ED Electronic Device; Electric Drive
EDA Electronic Design Automation; Excess Defense Article ( e.g., for transfer to allies. A forerunner was the Vietnam era, ca 1970, accelerated turnover of assets to Vietnam, or ACTOV ); Emplacement Decision Aid ( e.g., for the Family of Scatterable Mines )
EDACS Enhanced Digital Access Communications System
EDC Error Detection and Correction
EDCE Electric-Drive Control Electronics
EDD Envelope Delay Distortion ( e.g., in a radio receiver )
EDE Electronic Defense Evaluator
EDGE Enhanced Digital Geodetic Environment; Enhanced Data rates for Global Evolution; Enhanced Data GSM Environment
EDI Electronic Data Interchange ( X.12 ); Engineering Disposal Instruction ( USAF ); Electronic Data Interface
EDIG European Defense Industrial Group
EDM Engineering Data Management; Engineering Development Model; Engineering Disposition Management ( USAF ); ElectroDischarge Machine
EDOCC Enhanced Deep Operations Coordination Center
EDP Engagement Decision Point; Electronic Data Processing
EDR Engineering Disposition Request ( USAF )
EDS Explosive Detection System ( e.g., for airport security )
EDSI European Defense and Security Initiative
EDTS Expanded Data Transfer System
EE EW Expendable; Electrical Engineering
EEDSK Early Entry Deployment Support Kit (e.g., permits tracking inventory items as they are distributed to units )
E/ED Electrical/Electronic Distribution ( e.g., system )
EEI Essential Element of Information
EELD Evidence Extraction and Link Discovery
EELI Evidence Extraction and Link Discovery ( TIA program )
EELV Evolved Expendable Launch Vehicle ( USAF ); Enhanced Expendable Launch Vehicle
EEMIT Experimental Evaluation of Major Innovative Technologies ( DARPA )
EEP Elliptical-Error Probable ( location accuracy )
EEPROM Electrically Erasable/Programmable Read-only Memory
EER Explosive Echo Range
eESWA Enterprise Expeditionary Strike Warfare Architecture
EEZ Exclusive Economic Zone; Economic Exclusion Zone
EF Expedited Forwarding ( network data )
EFCS Electronic Filmless Camera System
EFDS Expeditionary Force Development System ( USMC )
EFIS Electronic Flight-Instrumentation System; Electrical Flight Instrument System
EFM Enhanced Fighter Maneuverability
EFOG-M Enhanced Fiber Optic Guided Missile
EFOV Effective Field Of View
EFP Exponential Floating Point ( algorithm ) [ also LNS ]; Explosively-Formed Penetrator; Explosively-Formed Projectile
EFV Expeditionary Fighting Vehicle
EFVS Electronic Fighting Vehicle System
EFA European Fighter Aircraft
EFP Explosively-Formed Projectile; Explosively Formed Penetrator
EFV Expeditionary Fighting Vehicle
EGA Enhanced Graphics Adapter
EGEE Enabling Grids for E-sciencE ( European Union )
EGI Embedded GPS/Inertial (navigation system)
EGNOS European Geostationary Navigation Overlay Service ( satellite system )
EHAM Electronic Home Arrest Monitor
EHE ElectroHydraulic Effects
EHF Extremely High Frequency ( 30 - 300 GHz )
EHVL Enhanced HyperVelocity Launcher
EIA Electronic Industries Association
EiB exbibytes - ( e.g., binary exa: 260 ), equal to 210 PiB ( pebibytes )
EICAS Engine Indication and Crew Alerting System
EID Electronic Identification Device
EIEIT Enterprise Interoperability and Emerging Information Technologies
EIM Enterprise Information Management
EIMSS Egyptian Integrated Mission Support System
EIRP Effective Isotropic Radiated Power
EIS Environmental Impact Statement; Earth Imaging System
EISA Extended Industry Standard Architecture
EIT Electromagnetically Induced Transparency
EIW Economic Information Warfare
EJAB Electronic Jammer Against Bombs [ e.g., against IEDs ] (Poland ca 2006 )
EKMS Electronic Key Management System
EKP Enterprise Knowledge Platform
EKRAN Coastal surveillance and navigation control system ( Bulgaria, ca 2006 )
EKV Exoatmospheric Kill Vehicle ( "Smart Rock" )
ELAMS Enhanced Lightweight Air-mobile Modular Shelter
ELAR Enemy Launch Acceptability Region
ELB Extended Littoral Battlespace
ELCID Early Limited Combat Identification
ELECTRO-OPTINT Electro-Optical Intelligence
ELES Enhanced Launcher Electronics System ( e.g., for NATO missile launchers )
ELEVON ELEVator and ailerON ( aircraft control surface combining functions of elevator and aileron )
ELD Expendable Laser Decoy; Emitter Location Data
ELF Extremely Low Frequency ( 3 Hz - 3 kHz )
ELINT Electronics Intelligence
ELISA Electronic Intelligence by Satellite ( e.g., French satellite ca 2007 )
ELITE Electronic Warfare Live Training Exercise ( Germany )
ELMM Enhanced Land/Maritime Mode ( e.g., E-8C aircraft system )
ELMS Electronic Mail System
ELOS Extended Line-of-Sight
ELS Emitter Location System; ESSM Launching System
ELSEC Electronics Security
ELT Emergency Locator Transmitter
ELV Expendable Launch Vehicle
ELVIS Expendable
Launch Vehicle Integrated Support (NASA)
EM Electromagnetic; Emergency Maintenance; Engineering Manual; Emergency Management
E-MAIL Electronic Mail
EMA Evolution in Military Affairs ( e.g., IW EMA )
EMAC Emergency Management Assistance Compact ( e.g., among states in the USA )
EMALL Electronic Mail ( DoD project )
EMALS Electromagnetic Aircraft Launching System; Electromagnetic Aircraft Launch System
EMATT Expendable Mobile ASW Training Target
EMBARC Electronic Mail Broadcast to a Roaming Computer
EMC Electromagnetic Compatibility; Engineered Military Circuit
EMCON Emission Control
EMD Engineering Manufacturing Development; Engineering and Manufacturing Development; Electro-Muscular Disruption (e.g., from a NONLETHAL WEAPON (NLW))
EMDS Electronic Music Delivery System
EMDU Enhanced Main Display Unit ( i.e., circa 2002 upgrade program for the E2C Hawkeye )
EMDW Expendable Mine-Destructor Weapon (system - Navy)
EME Electromagnetic Environment; Electromagnetic Energy
EMERALD Event Monitoring Enabling Responses to Anomalous Live Disturbances
EM/ET Electromagnetic/Electrothermal ( gun )
EMI Electromagnetic Interference ; Electron Magnetic Interference; Electromagnetic Induction
EMID Electromagnetic Intrusion Detector
EMIO Expanded Maritime Interception Operations ( U.S. Navy )
EML Electromagnetic Launcher
EMM Expanded Memory Manager
EMNS Expendable Mine Neutralization System
EMO (Russian acronym for "Electromagnetic weapons"); Electronic Maintenance Officer
EMP Electromagnetic Pulse; Electromechanical Power; Electromagnetic (pulse) Protection
EMPP Expedient/Modular Physical Protection ( e.g., of air bases )
EMPAR European Multifunction Phased Array Radar
EMPRS Enroute Mission Planning and Rehearsal System
EMR Electromagnetic Radiation; Electronic-combat Multi-function Radar; Electromagnetic Rail-gun; Extraordinary Magnetoresistance
EMS Electromagnetic Susceptibility; Expanded Memory Specification; Energy Management System; Earth-Moon System; Electromagnetic Spectrum
EMSEC Emission Security
EMSP Enhanced Modular Signal Processor
EMSS Enhanced Mobile Satellite Services ( e.g., IRIDIUM SATELLITE SYSTEM )
EMTE ElectroMagnetic Test Environment; ElectroMagnetic Threat Environment
EMU ElectroMagnetic Unit
EMUT Enhanced Manpack UHF Terminal ( formerly AMUT )
EMW Expeditionary Maneuver Warfare
EMV Electromagnetic Vulnerability
EMW Engineer & Mine Warfare; Expeditionary Maneuver Warfare ( USMC )
EN Explosive Neutralization ( program )
ENATD Explosive Neutralization Advanced Technology Demonstration ( also EN/ATD )
ENCE Enemy Situation & Correlation Element
ENCOMPASS Enhanced Consequence Management Planning and Support System
ENDP Exception to National Disclosure Policy
ENEWS Effectiveness of Navy EW Systems
ENOB Effective Number of Bits ( e.g., in an analog-to-digital converter )
ENS Ensign; Explosive Neutralization System; Electronics, Networking, and Systems
ENSYN Environmental Synthesizer
ENUM Electronic Number ( e.g., communications data record )
ENVG Enhanced Night-Viewing Goggle
ENVIS Evader's Night Vision Imaging System
EO Electro-Optics; Explosive Ordnance
EO DAS Electro-Optical Distributed Aperture System ( e.g., for the F-35 )
EOB Electronic Order of Battle
EOB-EGS Electronic Order of Battle - Environmental Generation System
EOC Emergency Operations Center
EOCCM Electro-Optic Counter-Countermeasures
EOCM Electro-Optic Countermeasures
EO DAS Electro-Optical Distributed Aperture System ( e.g., for the F-35 ) ( also EODAS )
EODMU Explosive Ordnance Disposal Mobile Unit
EODT Explosive Ordnance Disposal Training
EOF End of File
EOGB Electro-Optical Guided Bomb
EOID Electro-Optic Identification
EOIP Everything-Over-Internet Protocol ( also EoIP )
EOLOROPS Electro-Optical Long Range Oblique Photography System
EOP Electro-Optic Processor; Earth Observing Platform; Engineering Operating Procedure
EOQ Economic Order Quantity
EORSAT Electronics Intelligence Ocean Reconnaissance Satellite
EOS Earth Observing System
EOSAS Electro-Optical Signature Analysis System ( USAF )
EOSAT Earth Observation Satellite
EOSDIS Earth Observing System Data and Information System
EOSM Electro-Optical Support Measures
EOSS Electro-Optic Surveillance System; Engineering Operational Sequencing System
EOT End of Transmission; Electro-Optical Tracker
EOTDA Electro-Optical Tactical Decision Aids
EOTS Electro-Optical Targeting System
EOTV Electric Orbital Transfer Vehicle
EP Electronic Protection ( formerly ECCM ); Emergency Preparedness; Evolutionary Procurement; Electronic Protect
EPA Environmental Protection Agency
EPAF European Participating Air Forces
EPAM Electon, Proton, and Alpha Monitor
EPASS Electronic Portal Access Service ( for the Internet )
EPC Electronic Power Conditioner; Enhanced Pentagon Capability; Electronic Product Code
EPDS Electronic Processing and Dissemination System
EPFCG Explosively Pumped Flux Compression Generator ( see EXPLOSIVE MAGNETIC FLUX COMPRESSOR )
EPG Electronic Proving Ground
EPICCCS Enhanced Polygon Integrated Command Control and Communication System
EPIGE Escadron de Programmation et d'Instruction de Guerre Électronique ( French )
EPIRB Emergency Position-Indicating Radio Beacon
EPL Emitter Parameter List; ELINT Parameter List
EPLD Electronically Programmable Logic Device
EPLRS Enhanced Position Location & Reporting System; Enhanced Position Location Reporting System
EPM Electronic Postmark; Electronic Protective Measures ( e.g., special waveforms or encryption measures to establish secure communications - also called ECCM ); Emergency Propulsion Motor ( e.g., on a submarine )
EPMD Enterprise Performance Management Database
EPROM Electrically Programmable Read-Only Memory
EPS Electronic Protection System; Emergency Propulsion System
EPSMMCS Electronic Protection System Multimedia Communication System
EPX Electronic Private Exchange
EQM Environmental Quality Modeling and Simulation
E&R Evasion and Recovery ( see Personnel Recovery )
ERA Explosive Reactive Armor
ERAM ECCM Requirements and Assessments Manual
ERAPS Expendable Reliable Acoustic Path Sonobuoy
ERASE Electronic Radiation Source Elimination
ERAST Environmental Research Aircraft and Sensor Technology
ERCS Emergency Rocket Communications System ( circa 1963 )
ERG Emergency Response Guidebook ( Department of Transportation ca 2008 [ERG-2008] )
ERGM Extended-Range Gun Munition; Extended-Range Guided Munition
ERINT Extended Range Intercept Technology; Extended Range Interceptor
ERIP Engine Reliability Improvement Program
ERIS Exo-atmospheric Reentry Vehicle Interception System
ERLink Emergency Response Link
ERM Earth Resource Monitoring
ERMC Extended Range Mortar Cartridge
ERMES European Radio Messaging System
ERMP Extended Range Multi-Purpose ( e.g., UAV program )
ERO Extended Refueling Overhaul ( e.g., of a ship )
EROS Earth Resource Observation System
ERP Effective Radiated Power ; Equivalent Radiated Power; Enterprise Resource Planning; Enterprise Resource Planner; Enterprise Resource Project
ERRF European Rapid Reaction Force
ERS EUROPEAN SPACE AGENCY Remote-sensing Satellite; Electrically Reconfigurable Ship; Earth Research Satellite
ERTS Earth Resources Technology Satellite
ES Echo Sounding; Electromagnetic Switching; Error Seconds; Electronic Warfare Support Measures ; Expert System; Electronic Support; Electronic Suppression
ES2 Every Soldier a Sensor ( e.g., simulation program ca 2004 )
ES3 Electronic Sensors and Systems Sector ( also called ESSS )
ES4 Electromagnetic Spectrum Satellite Surveillance System
ESA Electronically-Scanned Array; European Space Agency; Electric Surge Arrester; Electronic Safe and Arm ( fuzing technology ); Electronically Scanned Antenna; Effective Surveillance Area
ESAD Electronic Safety and Arming Device
ESAI Expanded Situational Awareness Insertion ( USAF )
ESAMS Enhanced Surface-to-Air Missile Simulator
ESAR Enhanced Synthetic Aperture Radar
ESC Electronic Systems Center ( USAF ); Escape key on computer terminal keyboard; Enhanced Satellite Capability
ESD Electrostatic Discharge; Exploitation Support Data
ESDS Electrostatic Discharge Sensitive
ESE Electronic Surveillance Enhancement; Electronic Support Enhancement
ESEX Electronic propulsion Space EXperiment
ESF Emergency Support Function ( e.g., after a disaster )
ESG Expeditionary Strike Group
ESJ Escort Jamming
ESLRF Eye-Safe Laser Range-Finder
ESM Electronic-warfare Support Measures ; Electronic Support Measures; Electronic Security Measures
ESMC Explosive Standoff Mine Clearer
ESMB Explosive Stand-off Minefield Breacher
ESMI Extended Sample Matrix Inversion Technique
ESN Electronic Serial Number ( e.g., for cellular telephone )
ESOnet European Seafloor Observatory Network ( e.g., planned [ ca 2007 ] ten permanent undersea observatories, from the Arctic Ocean to the Black Sea )
ESR Equivalent Series Resistance ( e.g., capacitor )
ESRP European Security Research Programme
ESS ELINT Support System; Environmental Stress Screening; Electronic Switching System
ESSI Enhanced Special Structural Inspection ( e.g., of naval aircraft )
ESSM Enhanced Sea Sparrow Missile
ESSM Evolved SeaSparrow Missile
ESSS Electronic Sensors and Systems Sector ( also called ES3 )
EST Electronic Support Training; Eastern Standard Time; Estimated; Engagement Skills Trainer
ESTOL Extremely Short TakeOff and Landing
ESU Electronic (system) Support Unit ( USCG )
ET Electrothermal; Electronics Technician; ExaByte ( quintillion, or 1015 bytes ); Executive Transport
ET&A Education, Training & Awareness
ETA Estimated Time of Arrival
ETC ElectroThermal Chemical ( propulsion or gun ); Electronics Technician Chief; Enhanced Tactical Computers
ETCS Expeditionary Tactical Communications System ( USMC use of the IRIDIUM SATELLITE SYSTEM )
ETD Explosive Trace Detection; Expected Time of Departure
ETE Earth-To-Earth ( mission )
ETETS End-To-End Test System
ETICS Embedded Tactical Information Control System
ETIMS Enhanced Technical Information Management System
ETM+ Enhanced Thematic Mapper Plus ( e.g., LANDSAT instrument )
ETO Earth-To-Orbit (Launcher)
ETOS Effective Time On Station ( e.g., for a UAV )
ETPL Endorsed Tempest Products List
ETR Estimated Time to Repair
ETRAC Enhanced Tactical RAdar Correlator
E-TREC Electronic Treasury Enterprise Card ( e.g., for building access )
ETS Engineering Test Satellite; Emergency Telecommunications Service
ETSSP Enhanced Tactical Satellite Signal Processing
ETT Embedded Training Team
ETUT Enhanced Tactical Users Terminal
EUCLID European Cooperation for the Long Term in Defense
EULA End User License Agreement ( DoD )
EUP Equipment Usage Profile
EuroDASS Eurofighter self-protection system
EURON European Robotics Research Network
EUSS Expeditionary Underwater Sensor System
EUT End-User Terminal
EUV Extreme UltraViolet
EUVE Extreme UltraViolet Explorer ( satellite )
EUVL Extreme UltraViolet Lithography
EV Electron Volt; Electric Vehicle
EVA Extra-Vehicular Activity ( space term )
EVADE ECM Vulnerability Assessment Data Encyclopedia
EVD Enhanced Versatile Disc
EV-DO Evolution-Data Only [ also EVDO ] ( e.g., broadcast data standard )
EVM Earned Value Management ( Software project management )
EVS Enhanced Vision System
EWACS Early Warning and Control System
EWAISF Electronic Warfare Avionics Integration Support Facility ( USAF )
EWALL Electronic ( card ) Wall
EWAP Electronic Warfare Aggressor Program
EWAR Electronic Warfare
EWAT Electronic Warfare Advanced Technology
EWC Electronic Warfare Coordinator
EWC2 Electronic Warfare Command and Control
EWCAP Electronic Warfare Continuum Assessment Program
EWCC Electronic Warfare Coordination Center
EWCM Electronic Warfare Coordination Module
EWCP Electronic Warfare Control Processor
EWCS Electronic Warfare Core System
EWCU Electronic Warfare Control Unit
EWEP Electronic Warfare Evaluation Program
EWES Electronic Warfare Evaluation System
EWGCI Electronic Warfare Ground Controlled Intercept
EWIR Electronic Warfare Integrated Reprogramming
EWIRDB Electronic Warfare Integrated Reprogrammable DataBase; Electronic Warfare Integrated Reprogramming DataBase
EWISSP EW Integrated Systems for Small Platforms
EWMP Electronic Warfare Master Plan
EWMS Electronic Warfare Management System
EWO Electronic Warfare Operator - USAF ( 2002: phasing out in favor of WSO ); ARMY ( 2006: term covers enlisted and officers )
EWO Electronic Warfare Officer; Emergency War Order
EWOAG Electronic Warfare Operational Advisory Group ( Navy )
EWOBT Electronic Warfare On-board Trainer
EWOC Electronic Warfare Operation Center
EWOS Electronic Warfare Operational Shortfall; Electronic Warfare Operational Support ( U.K. )
EWPE Electronic Warfare Preprocessing Equipment ( Program )
EWR Early Warning Radar
EWRL Electronic Warfare Reprogrammable Library
EWS Electronic Warfare Support ( formerly ESM )
EWSI Electronic Warfare Simulation
EWSP Electronic Warfare Self-Protection ( e.g., for helicopters )
EWSS Electronic Warfare Support System
EWSSA Electronic Warfare Software Support Activity
EWTBB Electronic Warfare Transmitter Building Block
EWTES Electronic Warfare Threat Environment Simulator
EWTGU Electronic Warfare Technical Guidance Unit
EWTS-R Electronic Warfare Training System - Radar
EWVA Electronic Warfare Vulnerability Assessment
EXCEL Excellence through Commitment to Education and Learning ( U.S. Navy program - circa 2002 )
EXIM EXport/IMport
EXINT Extraction/Insertion ( e.g., of personnel )
EXJAM Expendable Jammer
EXPLAN Exercise Plan
EXPRESS Expedite the Processing of Experiments to the Space Station ( NASA )
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