Also found in: Thesaurus, Acronyms, Encyclopedia, Wikipedia.
Related to omicron: Greek alphabet


 (ŏm′ĭ-krŏn′, ō′mĭ-)
The 15th letter of the Greek alphabet. See Table at alphabet.

[Middle English, from Greek o mīkron, small o (because of its being a short vowel in Greek) : o, the letter o + mīkron, neuter of mīkros, small.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(əʊˈmaɪkrɒn; ˈɒmɪkrɒn)
(Letters of the Alphabet (Foreign)) the 15th letter in the Greek alphabet (Ο, ο), a short vowel, transliterated as o
[from Greek ō mikron small o; see micro-, omega]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈɒm ɪˌkrɒn, ˈoʊ mɪ-)

the 15th letter of the Greek alphabet (Ο, ο).
[1450–1500; < Greek ō mikrón. literally, small o. compare omega]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.omicron - the 15th letter of the Greek alphabet
Greek alphabet - the alphabet used by ancient Greeks
alphabetic character, letter of the alphabet, letter - the conventional characters of the alphabet used to represent speech; "his grandmother taught him his letters"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in classic literature ?
{mu epsilon nu}, {eta tau omicron iota}, {delta epsilon}.
Thus in Theodorus, 'god-given,' the {delta omega rho omicron nu} or 'gift' is not in itself significant.
It's because I want you to go look at both Zeta and Omicron Persei, and the surrounding Milky Way.
IOTA plus MC explodes into ATOMIC OMICRON transposes into MORONIC
In the twelve months to 31st March 2014, Omicron generated revenue of GBP 28.5m and a loss before tax of GBP 0.6m.
* Oxford Instruments Omicron Nanoscience,
Omicron, based in Albuquerque, New Mexico, executes contracts in the Department of Energy (DOE) sector of the nuclear industry, with an emphasis on nuclear safety technologies.
Andy Hedgecock, Omicron Surprisingly, despite the fast modern advances in technology in general, and its easy acceptance, in the electrical power sector it has been difficult to persuade the engineers to embrace some of the new technology available to them.
BETA: Omicron used a nice argument about odds and evens to suggest that in the spinner game spinning favoured Even with a two thirds probability.
Omicron Research Limited, CAMAG's UK Distributor, brings you the findings of recent phospholipids research, an area of growing importance to many industries.
The U-shaped Omicron handle requires no screws for installation.