omega

Meanings

1. 1
   noun

   the twenty-fourth and final letter of the Greek alphabet, written Ω or ω

   The physicist used lowercase omega to represent angular frequency.

2. 2
   noun

   the final member, stage, or end of a sequence

   For him, reconciliation was the alpha and omega of the whole negotiation.

From Middle English and Latin, from Greek omega, literally 'great o' (o mega), the name distinguishing long omega from short omicron. Because it is the Greek alphabet's last letter, omega acquired the figurative sense 'the end,' especially in the phrase alpha and omega.

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