Definition of molecular pump
: a vacuum pump that depends for its action on the adhesion of the gas or vapor molecules to a rapidly moving metal disk or cylinder by which they are carried away
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!
Seen and Heard
What made you want to look up molecular pump? Please tell us where you read or heard it (including the quote, if possible).