Definition of nor in English:


Pronunciation: /nɔː//nə/

adverb & conjunction

  • 1Used before the second or further of two or more alternatives (the first being introduced by a negative such as ‘neither’ or ‘not’) to indicate that they are each untrue or each do not happen.

    ‘they were neither cheap nor convenient’
    ‘the sheets were never washed, nor the towels, nor his shirts’
    1. 1.1
      ‘nor God nor demon can undo the done’
      literary term for neither
  • 2Used to introduce a further negative statement.

    ‘‘I don't see how.’ ‘Nor do I.’’
  • 3dialect, archaic [conjunction or preposition] Than.

    ‘she thinks she knows better nor me’


  • 1A Boolean operator which gives the value one if and only if all operands have a value of zero and otherwise has a value of zero.

    1. 1.1A circuit which produces an output signal only when there are no signals on any of the input connections.
      • ‘In the report published in Science last November, Lieber's group demonstrate that their stacked nanowires can combine to a variety of logic elements, including OR, AND, and NOR gates.’
      • ‘He and his colleagues have already created the biological equivalent of many logical components common in the digital world, such as AND, NAND, and NOR gates.’
      • ‘It is quite common to recognize two others as well: the NAND and the NOR gate.’


Middle English: contraction of Old English nother ‘neither’.