nop

See also: Nop

English

Pronunciation

• IPA^(key): /nɒp/

• Audio (Southern England):

  (file)

• Rhymes: -ɒp

Etymology 1

Alternative forms

• NOP

Noun

nop (plural nops)

1. (programming) A no-op; a CPU instruction that does nothing.
   • 1999, Dominic Sweetman, See MIPS Run:

     The MIPS instruction set is rich in nops, since any instruction with zero as a destination is guaranteed to do nothing.

   • 2004, Patterson et al, Computer Organization and Design: The Hardware/Software Interface

     Notice that in computing CPI or IPC, we do not count any nops executed as useful instructions.

Synonyms

• no-op

Derived terms

• NOP sled
• NOP slide

Verb

nop (third-person singular simple present nops, present participle nopping, simple past and past participle nopped)

1. (programming) To replace machine code with nop instructions when modifying software.
   • 1992, The Cyborg, The Cracking Manual:

     For example, if there is a CALL 3140 and we want to skip this call, we can NOP it out.

   • 2012, Michael W. Berry, Kyle A. Gallivan, Efstratios Gallopoulos, High-Performance Scientific Computing: Algorithms and Applications

     Worse, some patching can result in codes which cannot be executed: for example nopping the load which provides the value for the denominator of a division can result in a division by zero.

Etymology 2

Interjection

nop

1. (informal, rare) Alternative form of nope

Anagrams

• 'pon, NPO, ONP, OPN, Pon, pon

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Italian

Etymology

(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.)

Pronunciation

• IPA^(key): /ˈnɔp/
• Rhymes: -ɔp
• Hyphenation: nòp

Interjection

nop

1. (informal, neologism) nope

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Portuguese

Etymology

(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.)

Pronunciation

• IPA^(key): /ˈnɔp/

Interjection

1. (informal, neologism) nope

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Seri

Noun

nop (plural nopxam)

1. bobcat, Lynx rufus

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Spanish

Etymology

Possibly loaned from English nope.

Pronunciation

• IPA^(key): /ˈnop/ [ˈnop]

Interjection

nop

1. (informal, neologism) nope

See also

• sip