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number - definition and synonyms

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noun     number pronunciation in British English
Word Forms
  1. 1
    [countable] a sign or word that represents an amount or quantity. 1, 2, 3 etc and ‘one’, ‘two’, ‘three’ etc are numbers

    Can you read the numbers on the chart?

  2. 2
    [countable] used for showing the position of something in a series

    As a tennis player, she was rated number one (=the best) in the country.

    The local trains will be arriving at platform number 4.

    Her flat number is 16C.

  3. 3
    [countable] a telephone number

    Call this number to get a taxi.

    wrong number:

    I must have dialled the wrong number.

  4. 4
    [countable] a number that marks something in a way that separates it from everything else of its type, so that you can easily find it or discover who it belongs to

    Your account number is printed on every cheque.

    In order to get a job, you have to have a Social Security number.

  5. 5
    [countable/uncountable] a quantity of people or things
    number of:

    a small number of shops

    This brings the total number of children to 12.

    See also amount
  6. 6
    [countable] a song or piece of music, especially one that is part of a longer performance

    show-stopping numbers from Broadway musicals

    Synonyms and related words
    Synonyms and related words
  7. 7
    [countable] informal someone or something that is unusual or attractive

    She was wearing a little black number (=dress or outfit).

  8. 8
    [countable] British a copy of a magazine or newspaper

    a recent number of a football magazine

    back numbers (=old copies) of the Guardian

  9. 9
    [uncountable] linguistics the form of a word that shows whether you are referring to one thing or more than one thing

    If the subject is plural, the verb has to be in the plural number.

  10. From our crowdsourced Open Dictionary
    run the numbers to make calculations

    A good loan officer can run the numbers for you so you can make the right decision.

    Submitted by Boris Marchenko from Russian Federation on 25/11/2014
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a form of location that involves the underwater detonation of a bomb which causes sound waves that are picked up by ships

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