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e

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Definition of e

abbreviation
Physics. elementary charge.
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Other definitions for e (2 of 9)

e2

Symbol.
Mathematics. a transcendental constant equal to 2.7182818 …, used as the base of natural logarithms; the limit of the expression (1+1/n)n as n approaches infinity.

Other definitions for e (3 of 9)

E1

or e

[ ee ]
/ i /

noun, plural E's or Es, e's or es.
the fifth letter of the English alphabet, a vowel.
any spoken sound represented by the letter E or e, as in met, meet, mere, etc.
something having the shape of an E.
a written or printed representation of the letter E or e.
a device, as a printer's type, for reproducing the letter E or e.

Other definitions for e (4 of 9)

E2

abbreviation
east.
eastern.
excellent.
Expressway.

Other definitions for e (5 of 9)

E3

Symbol.

Other definitions for e (6 of 9)

e-1

variant of ex-1 occurring in words of Latin origin before consonants other than c, f, p, q, s, and t:: emit.

Other definitions for e (7 of 9)

e-2

(used in combination)
electric: e-bike.
electronic: e-book; e-cigarette.
on the internet; online: e-content; e-commerce.
involving electronic data transfer, especially over the internet: e-banking.
Sometimes E- .

Origin of e-

2
First recorded in 1985–90; shortening of electronic

historical usage of e-

Other definitions for e (8 of 9)

e.

abbreviation
eldest.
Football. end.
engineer.
engineering.
entrance.
Baseball. error; errors.

Other definitions for e (9 of 9)

E.

abbreviation
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use e in a sentence

British Dictionary definitions for e (1 of 7)

e

E

/ () /

noun plural e's, E's or Es
the fifth letter and second vowel of the modern English alphabet
any of several speech sounds represented by this letter, in English as in he, bet, or below

British Dictionary definitions for e (2 of 7)

e

symbol for
maths a transcendental number, fundamental to mathematics, that is the limit of (1 + 1 /n) n as n increases to infinity: used as the base of natural logarithms. Approximate value: 2.718 282…; relation to π: e πi = –1, where i = √–1
electron

British Dictionary definitions for e (3 of 7)

E

symbol for
abbreviation for
Spain (international car registration)
informal the drug ecstasy

Word Origin for E

(sense 8) from Latin (n) e (go) I deny (sense 10) from Spanish España

British Dictionary definitions for e (4 of 7)

e-1

prefix forming verbs and verbal derivatives
outeviscerate; egest
awayelapse; elongate
outsideevaginate
completelyevaporate
withoutebracteate

Word Origin for e-

from Latin ē away; related to ex- 1

British Dictionary definitions for e (5 of 7)

e-2

prefix
electronic, indicating the involvement of the internete-business; e-money

British Dictionary definitions for e (6 of 7)

E-

prefix
used with numbers indicating a standardized system within the European Union, as of recognized food additives or standard pack sizesSee also E number

British Dictionary definitions for e (7 of 7)

E.

abbreviation for
Earl
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for e

e

abbr.
electron
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for e (1 of 2)

e
[ ē ]

An irrational number, with a numerical value of 2.718281828459.... It is mathematically defined as the limit of (1 + 1n)n as n grows infinitely large. It is the base of natural logarithms and has many applications in mathematics, especially in expressions involving exponential growth and decay.

Scientific definitions for e (2 of 2)

E

The symbol for energy.
The symbol for modulus of elasticity.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Cultural definitions for e

e-

A prefix that stands for “electronic” and refers to information technologies, business, and almost anything connected to or transmitted over the Internet. Some examples of its use include e-business, e-commerce, e-book, and e-mail.

The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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