CALCINER
Cal*cin"er, n.
Defn: One who, or that which, calcines.
CALCISPONGIAE Cal`ci*spon"gi*æ, n. pl. Etym: [NL., fr. L. calx, calcis, lime + spongia a sponge.] (Zoöl.)
Defn: An order of marine sponges, containing calcareous spicules. See
Porifera.
CALCITE
Cal"cite, n. Etym: [L. calx, calcis, lime.] (Min.)
Defn: Calcium carbonate, or carbonate of lime. It is rhombohedral in its crystallization, and thus distinguished from aragonite. It includes common limestone, chalk, and marble. Called also calc-spar and calcareous spar.
Note: Argentine is a pearly lamellar variety; aphrite is foliated or chalklike; dogtooth spar, a form in acute rhombohedral or scalenohedral crystals; calc-sinter and calc-tufa are lose or porous varieties formed in caverns or wet grounds from calcareous deposits; agaric mineral is a soft, white friable variety of similar origin; stalaclite and stalagmite are varieties formed from the drillings in caverns. Iceland spar is a transparent variety, exhibiting the strong double refraction of the species, and hence is called doubly refracting spar.
CALCITRANT Cal"ci*trant, a. Etym: [L. calcitrans, p. pr. of calcitrare to kick, fr. calx, calcis , heel.]
Defn: Kicking. Hence: Stubborn; refractory.
CALCITRATE
Cal"ci*trate, v. i. & i. Etym: [L. calcitratus, p. p. of calcitrare.
See Calcitrant.]