No operation (NOP), common assembly language instruction.
"no-op." YourDictionary, n.d. Web. 16 May 2018. <http://www.yourdictionary.com/no-op>.
no-op. (n.d.). Retrieved May 16th, 2018, from http://www.yourdictionary.com/no-op
(NO OPeration) An instruction that does nothing but hold the place for a future machine instruction or fill up the space of a very large instruction word (VLIW). See VLIW. See also never execute bit.