Ο

See also: ο, -ο, -Ο, -ό, ὅ, ὁ, Ο̈, and Appendix:Variations of "o"

Ο U+039F, Ο GREEK CAPITAL LETTER OMICRON ← Ξ [U+039E] Greek and Coptic Π → [U+03A0]

Ancient Greek

Etymology

From Phoenician 𐤏 (ʿ, “ʿēn”). The reasoning behind the Greek sound value is unclear. The Phoenician letter derived its name and shape from an eye, which could have been translated into Greek as ὄμμα (ómma) or ὀφθαλμός (ophthalmós), but it is hard to see why this acrophonic name would have been forgotten.

Letter

Ο • (O) (uppercase, lowercase ο)

1. The letter omicron (ὂ μικρόν), the 15th letter of the ancient Greek alphabet.

Derived terms

• (Cyrillic) О
• (Coptic) Ⲟ
• (Gothic) 𐌿

See also

• (Greek-script letters) Α α, Β β, Γ γ, Δ δ, Ε ε, Ζ ζ, Η η, Θ θ, Ι ι, Κ κ, Λ λ, Μ μ, Ν ν, Ξ ξ, Ο ο, Π π, Ρ ρ, Σ σ ς, Τ τ, Υ υ, Φ φ, Χ χ, Ψ ψ, Ω ω
• (non-Classical letters) Ϝ (W) ϝ (w), Ͷ ͷ, Ͱ (H) ͱ (h), Ϻ (S) ϻ (s), Ϟ ϟ, Ϙ (Q) ϙ (q), Ͳ (S) ͳ (s)
• (punctuation) · ⸳ . ;
• (diacritics) ᾿ ῾ ◌́ ◌̀ ῀ ¨

Gaulish

Letter

Ο (O) (no case)

1. (palaeography) A letter of the Gallo-Greek Gaulish alphabet. It transcribed /o/ and /oː/.

   Synonym: Ω (Ō)

Greek

Letter

Ο • (O) (uppercase, lowercase ο)

1. The upper case letter omicron (όμικρον), the 15th letter of the modern Greek alphabet.

See also

• (Greek-script letters) Α α, Β β, Γ γ, Δ δ, Ε ε, Ζ ζ, Η η, Θ θ, Ι ι, Κ κ, Λ λ, Μ μ, Ν ν, Ξ ξ, Ο ο, Π π, Ρ ρ, Σ σ ς, Τ τ, Υ υ, Φ φ, Χ χ, Ψ ψ, Ω ω
• (non-Classical letters) Ϝ (W) ϝ (w), Ͷ ͷ, Ͱ (H) ͱ (h), Ϻ (S) ϻ (s), Ϟ ϟ, Ϙ (Q) ϙ (q), Ͳ (S) ͳ (s)
• (punctuation) · ⸳ . ;
• (diacritics) ᾿ ῾ ◌́ ◌̀ ῀ ¨
• Ο΄
• ͵Ο