ο

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

ο U+03BF, ο GREEK SMALL LETTER OMICRON ← ξ [U+03BE] Greek and Coptic π → [U+03C0]

Character variations

𝜊 U+1D70A, 𝜊 MATHEMATICAL ITALIC SMALL OMICRON ← 𝜉 [U+1D709] Mathematical Alphanumeric Symbols 𝜋 → [U+1D70B]

Translingual

Letter

ο (upper case Ο)

1. The lower case letter called omicron (όμικρον); The 15th letter of the Greek alphabet.

Symbol

ο'

1. The cardinal number 70 in Greek numerals.

Symbol

,ο

1. The cardinal number 70,000 in Greek numerals.

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 on Wikipedia.Wikipedia

Ancient Greek

Etymology

Derived from its majuscule counterpart Ο.

Letter

ο • (o) (lowercase, uppercase Ο)

1. Lower-case omicron (ὂ μικρόν), the 15th letter of the ancient Greek alphabet. It represented the close-mid back rounded vowel /o/. It is preceded by ξ and followed by π.

Derived terms

See also omicron

• ο΄, ͵ο
• о, О (Cyrillic)
• 𐌿 (Gothic)
• ⲟ, Ⲟ (Coptic)
• օ, Օ (Armenian)

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) ᾿ ῾ ◌́ ◌̀ ῀ ¨

Greek

Alternative forms

• ὁ (ho) — polytonic

Etymology

Inherited from Ancient Greek ὁ (ho).

Pronunciation

• IPA^(key): /o̞/

Article

ο • (o) m sg

1. the definite masculine singular article. the

Declension

The definite article

	singular				plural
	masculine	feminine	neuter		masculine	feminine	neuter
nominative	ο (o)	η (i)	το (to)		οι (oi)	οι (oi)	τα (ta)
genitive	του (tou)	της (tis)	του (tou)		των (ton)	των (ton)	των (ton)
accusative	το(ν) (to(n)) 1	τη(ν) (ti(n)) 1	το (to)		τους (tous)	τις (tis)	τα (ta)

1. The final ν is preserved before vowels, and the plosive/affricate consonants:
      κ, π, τ, ξ, ψ, μπ, ντ, γκ, τσ, τζ
Archaic forms used in certain fixed phrases: τοις (tois), τας (tas)

Pontic Greek

Etymology

From Ancient Greek ὁ (ho).

Pronunciation

• IPA^(key): /o̞/

Article

ο (o) m sg

1. (definite) the

Declension

The definite article

number	singular			plural
gender	m	f	n	m	f	n
nominative	ο	η	το	οι		τα
genitive	τη, του, τση	τη, τση	τη, του, τση	των, τουν, τη		των, τη
accusative	τον	την	το	τους, τσου, τοι, τσοι, τοιν, τοις		τα
* The final vowel is canonically deleted when the next word starts with a vowel. This happens in the nominative case as well. * The final ν is deleted when the next word starts with λ, μ or ρ, or when the next word is μου, σου. * Τhe inital τ becomes σ when preceded by the preposition ας.

Tsakonian

Etymology

From Ancient Greek ὁ (ho).

Pronunciation

• IPA^(key): /o̞/

Article

ο (o) m sg

1. (definite) the

Declension

Tsakonian definite article

	singular			plural
	m	f	n	m	f	n
nominative	ο (o)	α (a)	το (to)	οι (oi)	οι (oi)	τα (ta)
accusative	το(ν) (to(n))1	τα(ν) (ta(n))1	το (to)	του(ρ) (tou(r))2	του(ρ) (tou(r))2	τα (ta)
genitive	του (tou)	τα(ρ) (ta(r))2	του (tou)	του(ν) (tou(n))1	του(ν) (tou(n))1	του(ν) (tou(n))1

¹ The final "ν" is preserved before vowels, and the plosive/affricate consonants:
      κ, π, τ, μπ, ντ, γκ, τσ, τζ
² The final "ρ" is preserved before vowels.