omicron

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om·i·cron / ˈämiˌkrän; ˈōm-/ • n. the fifteenth letter of the Greek alphabet (Ο, ο), transliterated as ‘o.’ ∎  (Omicron) [followed by Latin genitive] Astron. the fifteenth star in a constellation: Omicron Piscium.

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omicron

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