Definition of omega in English:


Syllabification: o·me·ga
Pronunciation: /ōˈmāgə, ōˈmē-


  • 1The twenty-fourth, and last, letter of the Greek alphabet (Ω, ω), transliterated as ‘o’ or ‘ō.’.
    More example sentences
    • Ah, yes, the round letters are quite small; yes, the omicrons and omegas seem to hover, there, in the middle of the line.
    • Alpha, rho, tau, sigma, omega, Ash went over the letters he saw in his mind while Lari just stared, apparently in her own little world.
    • After all, her father was a maths teacher who knew his alpha from his omega.
  • 1.1The last of a series; the final development: [as modifier]: the omega point
    More example sentences
    • There are dangers to thinking of time as headed inevitably to some omega point, of us being on some inevitable road to Armageddon.
    • For a Pack werewolf, such a handicap would condemn me to omega status - the bottom of the heap.
    • That's the beginning and the end, the alpha and the omega, and there's no exceptions.
  • 1.2 (Omega) [followed by Latin genitive] Astronomy The twenty-fourth star in a constellation: Omega Scorpii
    More example sentences
    • Finally there is Omega Scorpii, made up of two stars which. can be seen separately with the naked eye; the magnitudes are. 4.0 and 4.3.
    • Omega Scorpii, a star, looks like a fifth moon, so don't be deceived.
    • Omega Centauri has been known to be an unusual globular cluster for a long time.


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  • (Ω) Ohm(s): a 100Ω resistor


from Greek ō mega 'big O'.

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a small amount; a little