E

e

Erg

E

east, eastern, edge, (chem.) Einsteinium, engineer, English, excellent, (Light) illumination

e

(Maths.) The base of hyperbolic or natural logarithmas

e (or E)

(Elec. Eng.) electromotive force, (Mech.)modulus of elasticity, coefficient of elasticity ; stretch modulus, Young’s modulus

e, ē, e˚

(Chem.) electron

e.

eldest, entrance

E. & O.E.

Errors and omissions excepted

E. A. S.

(Aero.) equivalent air speed

E. and O. E

errors and omissions excepted

E. B.

Encyclopedia Britannica

E. E.

electrical engineer, errors excepted

E. E. N. T.

eye, ear, nose and throat

E. I.

East Indian, East Indies

E. M. F.

electromotive force

E. O. M.

end of month

E. P.

estimated position, extended play,

end point, extreme pressure

E. T. A.

estimated time of arrival

 E. T. D.

estimated time of departure

E. W.

enlisted woman

E.D.

extra duty

e.g.

 for example

e.h.p. or E.H.P.

(Elec. Eng.) Effective horse-power,

 electric horse power

E.P.I.

elevation position indicator

e.s.u. or E.S.U.

(Elec.) electrostatic unit

E{3}

end-to-end encryption

E⁺ e˚

(Chem.) position

ea.

each

EAA

Experimental Aircraft Association (divided into local branches called Chapters).

EAC

Echelon Above Corps or Eastern Area Command

EADB

East African Development Bank

EAPC

Euro-Atlantic Partnership Council

EAR

electronically agile radar

Early ModDu. Early ModG.

Early Modern Dutch., Early Modern German

EAS

Equivalent airspeed, RAS minus correction for compressibility.

EB welding

Electron beam welding.

Eb,

(Chem.) erbium

EBG

Engin Blinde de Genie (combat engineer tractor)

EBRD

European Bank for Reconstruction and Development

EC

European Community

EC

East central

EC/NBC

Environmental Control/Nuclear, Biological and Chemical

ECA

Economic Commission for Africa

ECAFE

Economic Commission for Asia and the Far East

ECAS

Electronic Chemical Agent Alarm System

eccl.

ecclesiastic, ecclesiastical

Eccl.

Ecclesiastes

Eccles.

Ecclesiasticol

ECCM

electronic counter-countermeasures

ECE

Economic Commission for Europe

ECG

Electrocardiogram

ech.

echelon

ECIP

Energy Conservation Investment Program

ECLA

Economic Commission for Latin America

ECLAC

Economic Commission for Latin America and the Caribbean

ECM

Electronic Countermeasures

ECO

Economic Cooperation Organization

ecol.

ecological, ecology

Econ aid

economic aid with a military use (in Military Balance)

econ.

economics, economist, economy

ECOSOC

Economic and Social Council

ECOWAS

Economic Community of West African States

ECR

Electronic combat reconnaissance

ECS

Electronic Combat Squadron

ECS

Environmental Control System

ECSC

European Coal and Steel Community

ECU

Environmental Control Unit

Ecua.

Ecuador

ECV

Expanded capacity vehicle

ECWA

Economic Commission for Western Asia

ED

Ethyldichloroarsine

ed.

edited, edition, editor, education

Ed. B.

Bachelor of Education

Ed. D.

Doctor of Education

Ed. M.

Master of Education

EDA

Excess Defense Articles

EDB

extruded double base

Edin.

Edinburgh

edit.

edited, edition, editor

EDR

Effective downwind report(s)

EDS

European Distribution System

eds.

editions, editors

EDT

Eastern Daylight Time

educ.

educated, education, educational

EEC

European Economic Community

EEPROM

Electronically Erasable Programmable Read-Only Memory

EEZ

Exclusive economic zone

eff.

efficiency

EFIS

Electronic flight instrument(ation) system.

EFP

Explosively formed projectile

EFTA

European Free Trade Association

Eg.

Egypt, Egyptian

EGT

Exhaust gas temperature.

Egypt.

Egyptian

EHF

extra high frequency (30-300 GHz)

ehf

(Elec. Eng.) extremely high frequency

ehp

Equivalent horsepower

EIB

European Investment Bank

EICAS

Engine indication (and) crew alerting system.

EIFEL

Automatic data processing system

EIRP

equivalent isotropically radiated power

EIS

Entry into service.

Ejector

Component which throws the empty cartridge case clear of the weapon after firing.

EJS

enhanced JTIDS system

EKG,

Electrocardiogram

ekW

Equivalent kilowatts

EL

electroluminescent

el. or elev.

elevation

ELCAS

Elevated causeway

elec.

electric, electrical, electricity

elem.

elementary, elements

elevon

Wing trailing-edge control surface combining functions of aileron and elevator.

ELF

Extreme low frequency

ELINT

Electronic intelligence

ELIOS

ELINT identification and operating system

elm

element

ELSS

Environmental Life Support System

ELT

Emergency locator transmitter, to help rescuers home on to a disabled or crashed aircraft.

EM

electromagnetic

embryol.

embryology

EMC

electromagnetic compatibility

EMCDB

elastomer modified cast double base

EMD

Engineering and manufacturing development

EmDA

Emergency Drawdown Authority

emer.

Emeritus

EMF

ElectroMotive Force

EMG

electromagnetic gun

EMI

Electromagnetic interference

EMIS

Electro-Magnetic Isotope Separation

EML

electromagnetic launcher

EMMPS

Enhanced MEECN Message Processing System

EMP

electromagnetic pulse

emp.

emperor, empress

EMS

Enhanced mobility system

EMU

European Monetary Union

emu.

(Elec. Eng.) electromagnetic unit

Enc. or encl.

enclosure

ency. or encyc.

encyclopedia

eng.

engine, engineer, engineering

Eng.

England, English

engr

engineer

engr.

engineer, engraved, engraving

engrs.

engineers

enl.

enlarged, enlisted

ens.

ensign

ENSCE

Enemy Situation Correlation Element

entom. or entomol.

entomological, entomology

env.

envelope

Environmental Modification

Convention on the Prohibition of Military or Any Other Hostile Use of Environmental Modification Techniques

EO

electro-optical

E-O

Electro-optical

EOB

Electronic Order of Battle

EOCM

electro-optical countermeasures

EOD

Explosive Ordnance Disposal

EOGB

Electro-Optically Guided Bomb

EOTDAS

Electro-Optical Tactical Decision Aid Software

EOW

engineering order wire

EPA

Environmental Protection Agency.

EPC

electronic plane conversion

EPD

Electronic Personal Dosemeter

Eph.

Ephesians

EPLRS

Enhanced Position Location Reporting System

EPNdB

Effective perceived noise decibel, SI unit of EPNL

EPP

Electric power plant

EPROM

erasable programmable read-only memory

EPU

Electrical power unit

EPW

Enemy Prisoner of War

eq.

equal, equation, equivalent

eqpt

equipment

equip.

Equipment

equiv.

Equivalent

Er,

(Chem.) erbium

ER/RB

enhanced radiation/reduced blast

ERADCOM

Electronics Research and Development Command

ERAM

extended range anti-tank mine

ERCS

Emergency Rocket Communications System

ERINT

extended range interceptor

EROM

erasable read-only memory

ERP

Effective Radiated Power

ERU

ejector release unit

ERV

Electronic repair vehicle

Es

(Chem.) einsteinium

ESA

European Space Agency

ESAB

Extended Span Assault Bridge

ESBL

Extended Span Bridgelayer

ESCAP

Economic and Social Commission for Asia and the Pacific

ESCWA

Economic and Social Commission for Western Asia

Esk.,

Eskimo

ESM

electronic support measures

ESMB

Explosive Standoff Minefield Breacher

esp.

especially

esq. or esqr.

esquire

EST

Eastern Standard Time

est

estimate(d)

EST

eastern standard time

est.

estimate

est.

establish, estimate, estimated

ET

eastern time

et al.

 and other things

Et seq.

pl. et seqq. or et sqq. and what follows

Et.

(Chem.) ethyl

ETC

electrothermal-chemical

etc.

et cetera

ethnol.

ethnology

ETOPS

Extended-range twin (engine) operations, routing not more than a given flight time (120 min or 180 min) from a usable alternative airfield.

ETSS

Electronic Telecommunications Switching System (US)

ETTF

European Tanker Task Force

EU

European Union

Eu

(Chem.) europium

EUCOM

European Command (NATO)

Eur.

Europe, European

Euratom

European Atomic Energy Community

EUROCOM

European Communications

Eutelsat

European Telecommunications Satellite Organization

evap.

evaporate

eve. or evg.

evening

EW

Electronic Warfare

EWO

Electronic Warfare Officer

EWSM

Early-warning support measures.

EWT

Engineer wheeled tractor

EWWS

Electronic Warfare Warning System or Set

ex.

examination, examined, example, except,

exception, exchange, excursion, executed,

executive, express, extra

Ex. div.

Without dividend

exc.

excellent, except, exception, excursion

Exc.

Excellency

exch.

exchange, exchanged, exchequer

excl

excludes/excluding (in Military Balance)

exec.

executive, executor

exhbn.

exhibition

Ex-Im

Export-Import Bank of the United States

EXJAM

expendable jamming system

exor.

Executor

exp

expenditure

Exp.

express, export

exp.

expense(s), experiment, experimental, expired, export exportation, exported, exporter, express

expt.

experiment

exs.

examples

ext.

extension, exterior, external, externally,

extinct, extra, extract

Extractor

Component which pulls the empty cartridge case from the chamber after firing.

exx.

examples