omega

noun
ome·​ga | \ ō-ˈmā-gə How to pronounce omega (audio) , -ˈmē- How to pronounce omega (audio) , -ˈme- How to pronounce omega (audio) \

Definition of omega

1 : the 24th and last letter of the Greek alphabet — see Alphabet Table
2 : the extreme or final part : end
3a : a negatively charged elementary particle that has a mass 3270 times the mass of an electron

called also omega minus

b : a very short-lived unstable meson with mass 1532 times the mass of an electron

called also omega meson

First Known Use of omega

15th century, in the meaning defined at sense 1

History and Etymology for omega

Middle English, from Greek ō mega, literally, large o

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Time Traveler for omega

Time Traveler

The first known use of omega was in the 15th century

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Dictionary Entries Near omega

-ome

omega

omega-3

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Cite this Entry

“Omega.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/omega. Accessed 28 May. 2022.

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More Definitions for omega

omega

adjective
ome·​ga
variants: or ω- \ ō-​ˈmeg-​ə, -​ˈmā-​gə, especially British ˈō-​meg-​ə \

Medical Definition of omega

: of, relating to, or being a chemical group or position at the end of a molecular chain omega oxidation of fatty acids

More from Merriam-Webster on omega

Thesaurus: All synonyms and antonyms for omega

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