omega

[ oh-mee-guh, oh-mey-, oh-meg-uh ]

/ oʊˈmi gə, oʊˈmeɪ-, oʊˈmɛg ə /

SEE MORE SYNONYMS FOR omega ON THESAURUS.COM

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.

omega baryon.

omega meson.

Nearby words

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

For some, the two-state solution is the Alpha and the Omega.
What Peace Process Polling Doesn't Tell You|Yousef Munayyer|December 31, 2012|DAILY BEAST
William sports a replica of the Omega Seamaster watch he wore on his engagement day.
William and Kate Immortalised in Wax by Madame Tussauds|Tom Sykes|April 4, 2012|DAILY BEAST
The culprit is the Omega Chemical Corporation, a refrigerator recycling company that didn't do its job up to snuff.
Our Most Polluted States|The Daily Beast|May 19, 2010|DAILY BEAST
I'd say, an' so, first an' last, I'd get a sort o' alpha an' omega comfort out o' the passage about no givin' in marriage.
Humorous Ghost Stories|Dorothy Scarborough

"Now we must make ready for Alpha," said Omega, even while thoughts of the sea-monster chilled his heart.
Omega, the Man|Lowell Howard Morrow
This very street was the Alpha of her public life; the market place of Rouen its Omega!
The Greater Love|George T. McCarthy
Correct they both are, and stylish and orthodox, church and clothes being the alpha and omega of their conversation.
At the Age of Eve|Kate Trimble Sharber
Obedience to orders is the alpha and omega of army discipline; without it a cause is lost from the beginning.
Explanation of Catholic Morals|John H. Stapleton

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),

Medicine definitions for omega