Meaning & use

nop

noun·Academic

Last updated

In computer programming, an instruction that performs no operation, used to occupy time, cause a delay, or fill space in a sequence of code.

See it in a sentence

The programmer inserted a nop between the two instructions to align the code to a four-byte boundary.

Attackers sometimes pad exploit code with a long string of nops known as a "nop sled."

A note on using this word

Short for "no operation"; it is one of the few instructions supported by nearly every processor architecture, precisely because it does nothing.

Words with a similar meaning

no-op

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