ome·ga
| \ ō-ˈmā-gə
, -ˈmē-
, -ˈme-
\
, -ˈmē-
, -ˈme-
\
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
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“Omega.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/omega. Accessed 28 May. 2022.
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The first known use of omega was in the 15th century
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