Definition of group velocity
: the velocity with which some definite peculiarity of a composite wave train (as an interference maximum) advances through a medium — compare phase velocity
Start your free trial today and get unlimited access to America's largest dictionary, with:
- More than 250,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
First Known Use of group velocity
Seen and Heard
What made you want to look up group velocity? Please tell us where you read or heard it (including the quote, if possible).