Ο

From Phoenician 𐤏 (ʿ, “ʿayin”).

Ο • (O) (uppercase, lowercase ο)

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

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

• (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 (O) (no case)

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

   Synonym: Ω (Ō)

Ο • (O) (uppercase, lowercase ο)

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

• (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