What is the meaning of Ω?
The first (countably) infinite ordinal number, its corresponding cardinal number ℵ0 or the set of natural numbers (the latter of which are often defined to equal the former).
A near-open back rounded vowel between [ɔ] and [ɒ]: IPA [ɔ̞].
Lower-case omega (ὦ μέγα), the 24th letter of the ancient Greek alphabet. It represented the long open-mid back rounded vowel /ɔː/. It is preceded by ψ.
The lower case letter omega (ωμέγα), the 24th and last letter of the modern Greek alphabet.
oh!
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