English

electrocaloric

From electro- + caloric.

Ancient Greek ἤλεκτρον ‘amber’

French electrum

French électro-

Proto-Indo-European *ḱleh₁- ‘to be hot’

…

Proto-Italic *kalēō

Latin caleō ‘to be warm, hot’

Latin calor ‘heat’

French calorique

Today it means

adj Describing the effect of an applied electric field on the temperature of some materials

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

Etymograph / electrocaloric