epsilon

[ep-suh-lon, -luhn or, esp. British, ep-sahy-luhn]
noun
1.
the fifth letter of the greek alphabet (E, ε).
2.
the consonant sound represented by this letter.
3.
Mathematics. an arbitrarily small quantity, used to indicate that a given quantity is small, or close to zero.

Origin:
< Greek è psīlón bare, simple e (as opposed to diphthongal spellings which in later Gk represented the same sound)

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To epsilon
Collins
World English Dictionary
epsilon (ˈɛpsɪˌlɒn, ɛpˈsaɪlən)
 
n
the fifth letter of the Greek alphabet (Ε, ε), a short vowel, transliterated as e
 
[Greek e psilon, literally: simple e]

Epsilon (ˈɛpsɪˌlɒn, ɛpˈsaɪlən)
 
n
(foll by the genitive case of a specified constellation) the fifth brightest star in a constellation: Epsilon Aurigae

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Etymonline
Word Origin & History

epsilon
from Gk., lit. e psilon "bare -e-, -e- and nothing else," in contradistinction to the diphthong -ai-, which has the same sound.
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
American Heritage
Medical Dictionary

epsilon ep·si·lon (ěp'sə-lŏn', -lən)
n.


  1. Symbol ε The fifth letter of the greek alphabet.

  2. The fifth in a series.

adj.
  1. Of or relating to the fifth member of a particular ordered set.

  2. Relating to or characterizing a polypeptide chain that is one of five types of heavy chains present in immunoglobins.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
Slang Dictionary

epsilon

[see delta]
1. n. A small quantity of anything. "The cost is epsilon."
2. adj. Very small, negligible; less than marginal. "We can get this feature for epsilon cost."
3. `within epsilon of': close enough to be indistinguishable for all practical purposes, even closer than being `within delta of'. "That's not what I asked for, but it's within epsilon of what I wanted." Alternatively, it may mean not close enough, but very little is required to get it there: "My program is within epsilon of working."
FOLDOC
Computing Dictionary

EPSILON definition

language
A macro language with high level features including strings and lists, developed by A.P. Ershov at Novosibirsk in 1967. EPSILON was used to implement ALGOL 68 on the M-220.
["Application of the Machine-Oriented Language Epsilon to Software Development", I.V. Pottosin et al, in Machine Oriented Higher Level Languages, W. van der Poel, N-H 1974, pp. 417-434].
[Jargon File]
(1995-05-10)

epsilon definition


1. The fifth letter of the Greek alphabet.
2. (From the Hungarian mathematician Paul Erdos) A very small, insignificant, or negligible quantity of something.
The use of epsilon is from the epsilon-delta method of proof in differential calculus.
(2001-07-06)
The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
Cite This Source
Encyclopedia Britannica
Encyclopedia

epsilon

(symbol e), fundamental physical constant expressing the naturally occurring unit of electric charge, equal to 1.6021892 1019 coulomb, or 4.80325 1010 electrostatic unit (esu, or statcoulomb). In addition to the electron, all freely existing charged subatomic particles thus far discovered have an electric charge equal to this value or some whole-number multiple of it. Quarks, which are always bound within larger subatomic particles such as protons and neutrons, have charges of 13 or 23 of this value

Learn more about epsilon with a free trial on Britannica.com.

Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
Cite This Source
Example sentences
With this the annoying epsilon-delta limit argument is replaced by simple algebra.
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature
FAVORITES
RECENT

;