English

epithermal

From epi- + thermal.

A compound of epi- + thermal

Proto-Indo-European *h₁épi ‘on’

Proto-Hellenic *epí

Ancient Greek ἐπί ‘on, upon’

English epi-

Proto-Indo-European *gʷʰer- ‘to heat, warm’

Ancient Greek θέρμη ‘heat’

New Latin *thermalis

French thermal

Today it means

adj Describing deposits of minerals formed from warm water at shallow depth

Language periods are conventional ranges, not dates for this word.

Etymograph / epithermal