delta

Meaning

Noun

• 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.
• The symbol Δ.
• A small but noticeable effect. Compare epsilon.
• The set of differences between two versions of a file.
• A change in a quantity, likely from "d" for "difference".
• 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.
• The closed figure produced by connecting three coils or circuits successively, end for end, especially in a three-phase system.
• The rate of change in an option value with respect to the underlying asset's price.
• A value in delta notation indicating the relative abundances of isotopes.
• A military unit, nominally headed by a colonel, equivalent to a USAF operations wing, or an army regiment.
• a star that is usually the fourth brightest of a constellation.

Related

Similar words

• garrison

Broader meaning words

• Greeks

Origin

• From Ancient Greek δέλτα, ultimately from the Proto-Semitic word for door. dalet.
• from the triangular shape of the majuscule Greek letter delta Δ
• from the delta wing, symbol of the USSF, a triangular wing, shaped like the majuscule Greek letter delta Δ