DEC Wars = D = deckle

decay n.,vi

[from nuclear physics] An automatic conversion which is applied to most array-valued expressions in C; they `decay into' pointer-valued expressions pointing to the array's first element. This term is borderline techspeak, but is not used in the official standard for the language.

--The Jargon File version 4.3.1, ed. ESR, autonoded by rescdsk.