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zero - definition and synonyms


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noun zero pronunciation in British English /ˈzɪərəʊ/
Word Forms
pluralzeros or zeroes
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  1. 1
    [countable/uncountable] maths the number 0
    If x is zero, y must be 3.
    ‘He earns about £100 a day.’ ‘Add a couple of zeroes to that!’
    Synonyms and related words
    1. a.
      [uncountable] a value equal to zero on a scale
      Set the meter at zero.
      Synonyms and related words
    2. b.
      [uncountable] the temperature at which water freezes in the Celsius system
      above/below zero: The temperature was forty below zero.
  2. 2
    [only before noun] used for showing that there is no amount at all of something
    We’re likely to see zero growth in the market this year.
    astronauts in zero gravity
    1. a.
      [uncountable] informal nothing at all
      Our chances of success are zero.


a course of study which is much shorter than a university course and focuses on the skills you need for a job, especially computer-related skills

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an ancient Roman system of underfloor heating, used to heat houses with hot air; from the Latin 'hypocaustum'

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