ι

1. (mathematics, uncommon) imaginary unit
2. (logic) the definite descriptor

• ℩

Derived from its majuscule counterpart Ι.

ι • (i) (lowercase, uppercase Ι)

1. Lower-case iota (ἰῶτα), the ninth letter of the ancient Greek alphabet. It represented the close front unrounded vowel /i/. It is preceded by θ and followed by κ.

See also upsilon

• ι΄, ͵ι
• ɩ, Ɩ (Latin)
• і, І; ꙇ, Ꙇ (Cyrillic)
• 𐌹 (Gothic)
• ⲓ, Ⲓ (Coptic)

• (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) ᾿ ῾ ◌́ ◌̀ ῀ ¨

ι • (i) (lowercase, uppercase Ι)

1. The lower case letter iota (γιώτα), the ninth letter of the modern Greek alphabet. Transliterated as I or J.

• (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) ᾿ ῾ ◌́ ◌̀ ῀ ¨
• ι΄
• ͵ι