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Webster 1913 Edition

Adj.

[L.

calorificus

;

calor

heat +

facere

to make; cf. F.

calorifique

Possessing the quality of producing heat; heating.

Calorific rays

the invisible, heating rays which emanate from the sun, and from burning and heated bodies.

Adj.

That has the quality of producing heat; causing heat; heating.

calorific ‎(comparative more calorific, superlative most calorific)