“ο” U+03BF: Greek Small Letter Omicron

ℹ️ About

The Greek Small Letter Omicron (ο) represents the short “o” sound in the Greek alphabet. In mathematics and computing, it is the namesake of Big O notation ($O$), though the Latin ‘O’ is typically used for that specific purpose. Technically, U+03BF is distinct from the Latin lowercase ‘o’, though they appear identical in most sans-serif fonts.

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