omega
Americannoun
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the 24th and last letter of the Greek alphabet (Ω, ω).
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the vowel sound represented by this letter.
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the last of any series; the end.
noun
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the 24th and last letter of the Greek alphabet (Ω, ω), a long vowel, transliterated as o or ō
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the ending or last of a series
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An omega baryon.
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An omega meson.
Etymology
Origin of omega
< Greek ō méga literally, great o. Cf. omicron
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
It also owns brands such Breguet, Blancpain and Omega.
From The Wall Street Journal • May 18, 2026
It noted similar incidents during the 2022 launch of its MoonSwatch collaboration with Omega.
From Barron's • May 18, 2026
The findings were published in ACS Omega, a journal of the American Chemical Society.
From Science Daily • Apr. 20, 2026
The company also produces Omega, Longines and Tissot watches.
From BBC • Aug. 18, 2025
An Omega Seamaster De Ville made by snowy-haired Swiss craftsmen in 1950.
From "Black Swan Green" by David Mitchell
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
