epi·​thermal | \ ¦epə̇, ¦epē+ \

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

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History and Etymology for epithermal

epi- + thermal

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Cite this Entry

“Epithermal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/epithermal. Accessed 26 Jan. 2021.

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