δ

See also: Δ; △; ∆; ,δ; δ'; δ΄; and Appendix:Variations of "d"

Translingual

Symbol

δ

1. (mathematics) A (path-dependent, inexact) differential.
2. (mathematics) A small number, usually accompanied by ε.
   • For any $\epsilon >0$, there is a $\delta$$>0$ …
3. (mathematics) Kronecker delta or Dirac delta.

See also

• (differential): d
• δ on Wikipedia.Wikipedia

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Ancient Greek

Etymology

Derived from its majuscule counterpart Δ, from the Phoenician letter 𐤃, dalet.

Letter

δ • (d) (lowercase, uppercase Δ)

1. Lower case delta (δέλτα), the fourth letter of Greek alphabet. It represented in Ancient Greek a voiced dental plosive: /d/ and in modern Greek a voiced dental fricative: /ð/. It is preceded by γ and followed by ε.

Derived terms

• δ΄, ,δ (,d)
• d, D (Roman)
• д, Д (Cyrillic)
• ⲇ, Ⲇ (Coptic)
• ∂ (mathematics)

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 ϝ, Ͷ ͷ, Ͱ ͱ, Ϻ ϻ, Ϙ ϙ, Ͳ ͳ
• (punctuation) · ;
• (diacritics) ᾿ ῾ ◌́ ◌̀ ῀ ¨

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Greek

Etymology 1

From the Ancient Greek letter.

Letter

δ • (d) (lowercase, uppercase Δ)

1. Lower case delta (δέλτα), the fourth letter of Greek alphabet. It represents in modern Greek a voiced dental fricative: /ð/. It is preceded by γ and followed by ε.

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 ϝ, Ͷ ͷ, Ͱ ͱ, Ϻ ϻ, Ϙ ϙ, Ͳ ͳ
• (punctuation) · ;
• (diacritics) ᾿ ῾ ◌́ ◌̀ ῀ ¨

Alternative forms

• δις (dis)

Noun

δ • (d) f (indeclinable)

1. Abbreviation of δεσποινίς (despoinís): Miss

Synonyms

• δις (dis, “Miss”)

Coordinate terms

• κ (k, “Mr, Mrs”)
• κα (ka, “Mrs”)