omicron

omicron

[om-i-kron, oh-mi-]
noun
1.
the 15th letter of the greek alphabet (O, o ).
2.
the vowel sound represented by this letter.

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

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World English Dictionary
omicron (əʊˈmaɪkrɒn, ˈɒmɪkrɒn)
 
n
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 & Unabridged 10th Edition
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American Heritage
Medical Dictionary

omicron om·i·cron (ŏm'ĭ-krŏn', ō'mĭ-)
n.

Symbol o 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.
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