phase - definition and synonyms

noun [countable] 

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  1. 1
    a particular period of time during the development of something

    The war was about to enter its final phase.

    phase of:

    The first phase of the project will be completed by 2002.

    phase in:

    It was a depressing phase in the country’s history.

    1. a.
      a time in a person’s development or life when they behave in a particular way

      Their son went through a phase of being aggressive at school.

      Don’t worry about Tina – I’m sure it’s just a phase.

  2. 2
    astronomy a shape of the moon or a planet as we see it from the Earth that changes according to a regular pattern at different times in the month