Extended Strong's Greek Lexicon (Abbott-Smith based)
Omega
Usage: Ω, ω, ὦ μέγα (cf. ὂ μικρόν), omega, ô, the twenty-fourth and last letter. As a numeral, ω᾽ = 800, ω, = 800,000. As a symbol of the last (= τὸ τέλος), τὸ Ὦ (Rec. Ω, L, ὦ, T, ω), the Omega: Rev.1:8 21:6 22:13 (cf. Ἄλφα).† (AS)