What does the word momentum mean?

Usage examples for momentum

  1. It has the momentum of a great nation pushing it on from behind.... – The U.P. Trail by Zane Grey
  2. The struggle of the engines against the momentum of the ferry told that others had seen the gleaming ship or, at least, had heard the hail. – The Indian Drum by William MacHarg Edwin Balmer
  3. Mrs. Ebley did more than her duty- and had often too much momentum, which now and then upset other people's apple carts. – The Point of View by Elinor Glyn