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period

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noun [countable] British English pronunciation: period /ˈpɪəriəd/ 
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singularperiod
pluralperiods
  1. 1
    an amount of time during which something happens

    The long dry period ended with torrential rain.

    period of:

    A decision has to be made within a period of three months.

    period of time:

    They reached these conclusions in a relatively short period of time.

    1. a.
      a particular amount of time in history

      Their collection is confined solely to the Roman period.

    2. b.
      a particular part of someone's life or career

      This is described as the artist's angry period.

    3. c.

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