omega[ō mā′gə, -mē′-]
- Omega is defined as the last of something, particularly the last letter in the Greek alphabet.
An example of the omega is the final day on earth.
- the twenty-fourth and final letter of the Greek alphabet (Ω, ω): in English transliteration, as in the etymologies of this dictionary, it is shown as ō
- the last (of any series); end
Origin of omegaClassical Greek ō + mega, great (see mega-): literally , great (i.e., long) o, to distinguish from o mikron: see omicron
- The 24th letter of the Greek alphabet. See Table at alphabet.
- The last of a series; the end.
- In cosmology theory, the ratio of the average density of matter in the universe to its critical density.
- See omega baryon.
- See omega meson.
Origin of omegaMiddle English, from Greek ō mega, large o (from its being a long vowel in Greek) : ō, the letter o + mega, neuter of megas, large, great; see meg- in Indo-European roots.
(plural omegas or omegala)
- The twenty-fourth letter of the Classical and the Modern Greek alphabet, and the twenty-eighth letter of the Old and the Ancient Greek alphabet, i.e. the last letter of every Greek alphabet. Uppercase version: Ω; lowercase: ω.
- (idiomatic, often capitalized) The end; the final, last or ultimate in a sequence.
- I am the Alpha and the Omega, the First and the Last, the Beginning and the End. — Revelation 22:13, New International Version.
- (physics) Angular velocity; symbol: ω.
From Middle English, from Ancient Greek ὦ (ō) μέγα (mega, “large”) (omega is a long vowel in Ancient Greek).
omega - Investment & Finance Definition
A model used to price derivatives that measures the effect of volatility. Also called vega, zeta, or kappa.