What is "calefacient"

Calefacient \Cal`e*fa"cient\, n. A substance that excites warmth in the parts to which it is applied, as mustard.

Calefacient \Cal`e*fa"cient\, a. [L. calefaciens p. pr. of calefacere to make warm; calere to be warm + facere to make.] Making warm; heating. [R.]

adj. producing the sensation of heat when applied to the body; "a mustard plaster is calefacient" [syn: warming]