Definition of momentum noun from the Oxford Advanced Learner's Dictionary

     

    momentum

     noun
    noun
    BrE BrE//məˈmentəm//
     
    ; NAmE NAmE//moʊˈmentəm//
     
    [uncountable] Energy and physical forces
     
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  1. 1the ability to keep increasing or developing The fight for his release gathers momentum each day. They began to lose momentum in the second half of the game.
  2. 2a force that is gained by movement The vehicle gained momentum as the road dipped.
  3. 3(specialist) the quantity of movement of a moving object, measured as its mass multiplied by its speed See related entries: Energy and physical forces
  4. Word Origin late 17th cent.: from Latin, from movimentum, from movere ‘to move’.Extra examples She gave fresh momentum to the campaign. The campaign for change now has considerable momentum. The car gathered momentum as it rolled down the hill. The team has lost momentum in recent weeks. Their momentum has gone, and they feel they cannot fight any longer. There is plenty of political momentum behind the proposed changes. There’s no forward momentum in the movie. We have to keep the momentum of our sales operation going. We must keep up the momentum for reform. keeping up the momentum for growth the irresistible momentum towards reunification of the two countries The momentum of this success carried the party to victory in the elections. The programme developed a momentum of its own. There was an unstoppable momentum towards German reunification. This deal adds fresh momentum to plans for a new rail link.
See the Oxford Advanced American Dictionary entry: momentum