it’s - definition and synonyms

short form 

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/ɪts/
  1. 1
    a way of saying or writing ‘it is’. This is not usually used in formal writing

    It’s cold outside.

  2. 2
    a way of saying ‘it has’ when ‘have’ is used as an auxiliary verb. This is not usually used in formal writing

    It’s been raining for hours.