caledonite (kaledonit)

[L. Caledonia, Scotland, + -ite2.] A blue or greenish-blue mineral, a hydrous sulphate of lead and copper, found in attached crystals, with other ores of lead, at Lead hills in Lan arks hire, Scotland, and at Rough ten Gill in Cumber land, England, also in Hungary and the Harz mountains. calefacient (kal-e-fa's hient), a. and n. [L. calefacien (t-)s, ppr. of calefacere, make warm or hot, II. n. That which warms or heats; in med., a substance which excites a sensation of warmth in the part to which it is applied, as mustard, pepper, etc.; a superficial stimulant. calefaction (kal-e-fak's hon), n. [L. calefac tio (n-), calefacere : see calefactive , calefacient .] 1. The act or operation of warming or heating; the production of heat in a body by the action of fire, or by the communication of heat from other bodies.-2. The state of being heated. As [if] the remembrance of... calefaction can warm a man in a cold frosty night. Dr. H. More, Pref. to Psychozoia, i.