noun
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.
(often capitalized) The end; the final, last or ultimate in a sequence.
(physics) Angular velocity; symbol: ω.
(set theory) A transfinite ordinal number referring to the next position after ordering a countably infinite set.
(slang) An omega male.
(finance) The percentage change in an option value divided by the percentage change in the underlying asset's price.
(fandom slang) 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.
adjective
(slang, largely prepositive) Ultimate; of the highest degree. Massive, ineffable.
adverb
(slang, largely prepositive) Ultimately, most, supremely.