omega

[ oh-mee-guh, oh-mey-, oh-meg-uh ]
/ oʊˈmi gə, oʊˈmeɪ-, oʊˈmɛg ə /

noun

the 24th and last letter of the Greek alphabet (Ω, ω).
the vowel sound represented by this letter.
the last of any series; the end.

Nearby words

  1. ombu,
  2. ombudsman,
  3. ombudsperson,
  4. ombudswoman,
  5. omdurman,
  6. omega baryon,
  7. omega meson,
  8. omega minus,
  9. omega-3 fatty acid,
  10. omega-c baryon

Origin of omega

< Greek ō méga literally, great o. Cf. omicron

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for omega


British Dictionary definitions for omega

omega

/ (ˈəʊmɪɡə) /

noun

the 24th and last letter of the Greek alphabet (Ω, ω), a long vowel, transliterated as o or ō
the ending or last of a series

Word Origin for omega

C16: from Greek ō mega big o; see mega-, omicron

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

Word Origin and History for omega

omega

c.1400, from Medieval Greek omega, from classical Greek o mega "big 'o' " (in contrast to o micron "little 'o' "); so called because the vowel was long in ancient Greek. From mega (see mega-). The final letter of the Greek alphabet, hence used figuratively for "the last, final" of anything (cf. Rev. i:8),

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for omega

omega

[ ō-mĕgə, ō-mēgə, ō-mā- ]

n.

The 24th letter of the Greek alphabet.

adj.

Of or characterizing a chemical group or position at the end of a molecular chain, such as omega-oxidation.

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

Science definitions for omega

omega

[ ō-mĕgə, ō-mēgə, ō-mā- ]

An omega baryon.
An omega meson.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Idioms and Phrases with omega

omega

see alpha and omega.

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.