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NOR

nouncommon in dialogue

A binary operator composite of NOT OR; negation of OR function.

noun

  1. 1

    A binary operator composite of NOT OR; negation of OR function.

    0 NOR 0 is 1; 1 NOR anything is 0.

    The associativity of OR and AND is not at all obvious. It is tempting to assume that because OR and AND are commutative that they must be associative also. This is not the case, however, and some commutative Boolean operators are not associative. Examples include NAND and NOR.

    The output state of the NOR gate will be high (1) when all the inputs are low (0). NOR gate returns the complement result of the OR gate.

  2. 2

    Variant of nucleolus organiser regionAcronym of nucleolus organiser region.

Etymology

From nor. Reinterpreted as NOT + OR or negation + OR (see also NAND, formed analogically).

Forms

plural
NORs
The neighbouring pagesAlphabetical order follows the rules of the language, not byte values: an accent decides only between two otherwise identical words, and Spanish files Ñ as a letter of its own.

Lexical content from Wiktionary, under CC BY-SA 4.0 · Source entry · Data version 2026-08-23

Rank among the words of the OpenSubtitles 2018 corpus — film and television subtitles, so spoken rather than written usage (CC BY-SA 3.0).