of, pertaining to, or derived from calcium or lime

(inorganic chemistry) The calcium salt of hydrochloric acid, CaCl₂; used as a drying agent and to melt ice on roads.

Any of many sponges, of the class Calcarea, having skeletons composed of spicules of calcium carbonate

(pharmacology) The salt form of the protease inhibitor drug fosamprenavir used in the treatment of HIV infected patients.

(inorganic chemistry) The yellow calcium salt of chromic acid, CaCrO₄

(inorganic chemistry) The calcium salt of phosphoric acid, Ca₃(PO₄)₂, or of several related acids; it is the main mineral of bone

Alternative spelling of calcium sulfate

(inorganic chemistry) The calcium salt of sulfuric acid, CaSO₄, the hydrates of which are known as gypsum or plaster of Paris, and the anhydrous mineral form being anhydrite.

(logic) A formal system.

(logic) propositional logic.