momentum - definition and synonyms

 
noun [uncountable] 

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/məʊˈmentəm/
  1. 1
    progress or development that is becoming faster or stronger

    the momentum towards economic and political union in Europe

    gain/gather momentum:

    Interest in human rights issues has gained momentum.

    lose momentum:

    There was already evidence that the riots were losing their momentum.

    maintain the momentum/keep the momentum going:

    We must maintain the momentum of reform.

  2. 2
    the speed with which a moving object keeps moving or moves faster

    The vehicle gained momentum as the road dipped.

  3. 3
    physics the tendency of a moving object to keep moving unless another force stops it or slows it down