vis viva

noun vis vi·va \-ˈvīvə\

Definition of vis viva


vires vivae

  1. :  the force of a moving body calculated as the product of its mass and the square of its velocity :  twice the kinetic energy

Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Join MWU now and get access to America’s largest dictionary, with:

  • 300,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Origin and Etymology of vis viva

New Latin, living force

Seen and Heard

What made you want to look up vis viva? Please tell us where you read or heard it (including the quote, if possible).


a brief usually trivial fact

Get Word of the Day daily email!