Δ

See also: δ; ,δ; δ'; △; ∆; ㅿ; ᐃ; and Appendix:Variations of "d"

Δ U+0394, Δ GREEK CAPITAL LETTER DELTA ← Γ [U+0393] Greek and Coptic Ε → [U+0395]

Translingual

Symbol

Δ

1. (mathematics, sciences) Alternative form of ∆: change in a variable
2. (chemistry) Used on the reaction arrow in a chemical equation, to show that energy in the form of heat is added to the reaction
3. (mathematics, set theory) Used to represent the symmetric difference (also known as the disjunctive union) of two sets
4. (genetics) Used before a gene name as a modifier to denote a deletion mutation of that gene.
5. (music) Used after a pitch class to denote a major seventh chord with a note of said pitch as its root.

Usage notes

(mathematics): Unicode establishes a distinct symbol (∆) for particular use in mathematics, but Δ is often substituted for convenience.

Coordinate terms

• Δ on Wikipedia.Wikipedia

English

Noun

Δ

1. (law) Abbreviation of defendant.

Albanian

Pronunciation

• IPA^(key): /ð(ə)/

Letter

Δ (Dh) (upper case Δ, lower case δ)

1. The 6th letter of the Arvanitic Albanian Greek-script alphabet.

See also

• (Greek script letters) Α α, Β β, Ƃ ƅ, Γ γ, Γj γj, Δ δ, D d, Ε ε, Ε̱ ε̱, Ζ ζ, Ζ̇ ζ̇, Θ θ, Ι ι, J j, Κ κ, Κ̇ κ̇, Λ λ, ΛΛ λλ, Λ̇ λ̇, Μ μ, Ν ν, Ν̇ ν̇, Ο ο, Π π, Ρ ρ, Ρ̇ ρ̇, Σ σ, Σ̈ σ̈, Τ τ, Ȣ ȣ, Υ υ, Φ φ, Χ χ, Χ̇ χ̇, ΤΣ τσ, ΤΣ̈ τσ̈, DΣ dσ, DΣ̈ dσ̈
• (Latin-script letters) shkronjë; A a, B b, C c, Ç ç, D d, Dh dh, E e, Ë ë, F f, G g, Gj gj, H h, I i, J j, K k, L l, Ll ll, M m, N n, Nj nj, O o, P p, Q q, R r, Rr rr, S s, Sh sh, T t, Th th, U u, V v, X x, Xh xh, Y y, Z z, Zh zh

Ancient Greek

Etymology

From the Phoenician letter 𐤃 (d, “dālet”).

Letter

Δ • (D) (uppercase, lowercase δ)

1. The letter delta (δέλτα (délta)), the fourth letter of the ancient Greek alphabet.

Derived terms

• (Cyrillic) Д
• (Coptic) Ⲇ
• (Gothic) 𐌳

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) ᾿ ῾ ◌́ ◌̀ ῀ ¨

Cypriot Arabic

Pronunciation

• IPA^(key): /ð/

Letter

Δ (lower case δ)

1. A letter of the Cypriot Arabic alphabet, written in the Latin script.

Greek

Adjective

Δ • (D)

1. Abbreviation of δυτικός (dytikós, “west, westerly”).

Noun

Δ • (D)

1. Abbreviation of δύση (dýsi, “west”).

See also

• Appendix:Greek compass points

Letter

Δ • (D) (uppercase, lowercase δ)

1. The upper case delta (δέλτα), the fourth letter of the modern Greek alphabet, representing a voiced interdental fricative (/ð/).

Coordinate terms

• (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) ᾿ ῾ ◌́ ◌̀ ῀ ¨

Descendants

• (Glagolitic): Ⰴ, ⰴ

See also

• Δ΄
• ͵Δ

Wakhi

Pronunciation

• IPA^(key): /ð/

Letter

Δ (lower case δ)

1. A letter of the Wakhi alphabet, written in the Latin script.