Etymology
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caloric (n.)

hypothetical fluid in a now-discarded model of heat exchange, 1792, from French calorique, coined in this sense by Lavoisier, from Latin calorem "heat" (nominative calor), from PIE root *kele- (1) "warm." The adjective, "pertaining to heat or the principle of heat," is recorded from 1865.

updated on October 19, 2017

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Definitions of caloric from WordNet

caloric (adj.)
relating to or associated with heat;
the caloric effect of sunlight
Synonyms: thermal / thermic
caloric (adj.)
of or relating to calories in food;
comparison of foods on a caloric basis
the caloric content of foods
Etymologies are not definitions. From wordnet.princeton.edu, not affiliated with etymonline.