a. Now rare. [f. L. calefact-, ppl. stem of calefacĕre to warm: see -IVE.] Having the tendency to warm; warming.
1576. Newton, trans. Lemnie’s Complex. (1633), 101. The warme and calefactive spirit, which … was infused into the whole world.
1678. Hobbes, Decameron, Wks. 1845, VII. 120. The air … had gotten a calefactive power.
1874. B. Bernard, S. Lover, I. 158. Calefactive depths of Celticism.
