nop

See also: Nop and NOP

English

Pronunciation

• (Received Pronunciation) IPA^(key): /nɒp/
• (General American) IPA^(key): /nɔp/

• 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

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

Portuguese

Etymology

Borrowed from English nope.

Pronunciation

• (Brazil) IPA^(key): /ˈnɔp/

Interjection

nop

1. (informal, neologism) nope

Seri

Noun

nop (plural nopxam)

1. bobcat, Lynx rufus

References

• Moser, Mary B., Marlett, Stephen A. (2010) Comcaac quih yaza quih hant ihiip hac: cmiique iitom - cocsar iitom - maricaana iitom [Seri-Spanish-English Dictionary], 2nd edition, Hermosillo: Plaza y Valdés Editores, →ISBN, page 454.

Spanish

Etymology

Possibly loaned from English nope.

Pronunciation

• IPA^(key): /ˈnop/ [ˈnop]
• Rhymes: -op
• Syllabification: nop

Interjection

nop

1. (informal, neologism) nope

See also

• sip