Omega
//ˌoʊˈmeɪɡə// adj, adv, noun, slang
adj, adv, noun, slang ·Common ·High school level
Definitions
Noun
- 1 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.
"The fact that the letter was incised above the line indicates that it is probably an omega."
- 2 Alternative letter-case form of omega. alt-of
- 3 the last (24th) letter of the Greek alphabet wordnet
- 4 The end; the final, last or ultimate in a sequence. capitalized, often
"alpha and omega"
- 5 the ending of a series or sequence wordnet
Show 5 more definitions
- 6 Angular velocity; symbol: ω.
"The ratio between the rho and omega cross section is obtained."
- 7 A transfinite ordinal number referring to the next position after ordering a countably infinite set.
- 8 An omega male. slang
- 9 The percentage change in an option value divided by the percentage change in the underlying asset's price.
- 10 In omegaverse fiction, a person of a submissive secondary sex driven by biology, magic, or other means to bond with an alpha, with males of this type often being able to get pregnant. slang
"Often omegas go into heat and release pheromones that drive alphas wild."
Adjective
- 1 Ultimate; of the highest degree. Massive, ineffable. not-comparable, slang
"Omega props, dude."
Adverb
- 1 Ultimately, most, supremely. not-comparable, slang
"Whatever your plan is, I just think this idea's omega stupid. Ain't you got something better?"
Example
More examples"I am the Alpha and the Omega, the first and the last, the beginning and the end."
Etymology
From Middle English, from Ancient Greek ὦ μέγα (ô méga), meaning “great ω” (omega is a long vowel in Ancient Greek).
Related phrases
More for "omega"
Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.