SED /S.E.D/, n. [TMRC, from `Light-Emitting Diode'] Smoke-emitting diode. A {friode} that lost the war. See also {LER}. [Not to be confused with sed(1), the Unix stream editor. --ESR]
Sed <tool, text> Stream editor. The {Unix} stream editor. It has a powerful but cryptic command language and is based on {regular expressions}. There is a {GNU} version called {GNU Sed}. [{Jargon File}] (1994-11-03)
smoke-emitting diode SED <humour, electronics> (From "{light-emitting diode}") An incorrectly connected {diode}, probably a {light-emitting diode}, in the process of losing its {magic smoke} and becoming a {friode}. See also {LER}. (1996-04-28)
SED Surface-conducting electron Emitter Display (Toshiba)