epithermal
Definition of epithermal
1 : deposited from warm waters at rather shallow depth under conditions in the lower ranges of temperature and pressure —used of mineral veins and ore deposits — compare hypothermal, mesothermal
2 : having translational speeds and energies greater than those usually due to thermal agitation but less than those required for nuclear fission epithermal neutrons
From the M-W Editors
There's more!
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.
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!
Origin and Etymology of epithermal
epi- + thermal
Seen and Heard
What made you want to look up epithermal? Please tell us where you read or heard it (including the quote, if possible).
Writing? Check your grammar now!