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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