delta

Definitions

• The fourth letter of the modern Greek alphabet Δ, δ.
• A landform at the mouth of a river where it empties into a body of water.
• The letter D in the ICAO spelling alphabet, which assigns words to letters of the alphabet.
• (mathematics) The symbol Δ.
• (computing) A small but noticeable effect. Compare epsilon (epsilon).
• (computing) The set of differences between two versions of a file.
• (physics) A change in a quantity, likely from "d" for "difference".
• (surveying) The angle subtended at the center of a circular arc.
• A type of cargo bike that has one wheel in front and two in back.
• (electrical) The closed figure produced by connecting three coils or circuits successively, end for end, especially in a three-phase system.
• (finance) The rate of change in an option value with respect to the underlying asset's price.
• (chemistry) A value in delta notation indicating the relative abundances of isotopes.
• (US) A military unit, nominally headed by a colonel, equivalent to a USAF operations wing, or an army regiment.