Dictionary.com

omicron

[ om-i-kron, oh-mi- ]
/ ˈɒm ɪˌkrɒn, ˈoʊ mɪ- /
Save This Word!

noun
the 15th letter of the Greek alphabet (O, o).
the vowel sound represented by this letter.
QUIZ
ARE YOU A TRUE BLUE CHAMPION OF THESE "BLUE" SYNONYMS?
We could talk until we're blue in the face about this quiz on words for the color "blue," but we think you should take the quiz and find out if you're a whiz at these colorful terms.
Question 1 of 8
Which of the following words describes “sky blue”?
Meet Grammar CoachWrite or paste your essay, email, or story into Grammar Coach and get grammar helpImprove Your Writing
Meet Grammar CoachImprove Your Writing
Write or paste your essay, email, or story into Grammar Coach and get grammar help

Origin of omicron

<Greek ō mikrón, literally, small o.Cf. omega

Words nearby omicron

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use omicron in a sentence

British Dictionary definitions for omicron

omicron
/ (əʊˈmaɪkrɒn, ˈɒmɪkrɒn) /

noun
the 15th letter in the Greek alphabet (Ο, ο), a short vowel, transliterated as o

Word Origin for omicron

from Greek ō mikron small o; see micro-, omega
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 omicron (1 of 2)

ο

The Greek letter omicron. Entries beginning with this character are alphabetized under omicron.

Medical definitions for omicron (2 of 2)

omicron
[ ŏmĭ-krŏn′, ōmĭ- ]

n.
The 15th letter of the Greek alphabet.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
FEEDBACK