omega

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noun ome·ga \ō-ˈmā-gə, -ˈmē-, -ˈme-\

Definition of omega

  1. 1 :  the 24th and last letter of the Greek alphabet — see alphabet table

  2. 2 :  the extreme or final part :  end

  3. 3a :  a negatively charged elementary particle that has a mass 3270 times the mass of an electron —called also omega minusb :  a very short-lived unstable meson with mass 1532 times the mass of an electron —called also omega meson

Origin and Etymology of omega

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


First Known Use: 15th century


OMEGA Defined for English Language Learners

omega

play
noun ome·ga \ō-ˈmā-gə, -ˈmē-, -ˈme-\

Definition of omega for English Language Learners

  • : the 24th and last letter of the Greek alphabet


Medical Dictionary

omega

adjective ome·ga
variants: or

ω-

\ō-ˈmeg-ə, -ˈmā-gə, especially British ˈō-meg-ə\play play play

Medical Definition of omega

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



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