Δ

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

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.

Usage notes

(mathematics): Unicode establishes a distinct symbol (∆) for particular use in mathematics, but the upper case delta here is often substituted for convenience.

Coordinate terms

• Δ on Wikipedia.Wikipedia

---

English

Noun

Δ

1. (law) Abbreviation of defendant.

---

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/).

Numeral

Δ'

1. The number four in Greek numerals.

,Δ

1. The number 4000 in Greek numerals.

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