verb
To heat (a substance) to remove its impurities and refine it.
To heat (a substance) without melting in order to drive off water, etc., and to oxidize or reduce it; specifically, to decompose (carbonates) into oxides, and, especially, to heat (limestone) to form quicklime.
To heat (something) to dry and sterilize it.
To purify or refine (something).
To burn up (something) completely; to incinerate; hence, to destroy (something).
(intransitive, physical chemistry) Of a substance: to undergo heating so as to oxidize it.
noun
Something calcined; also, material left over after burning or roasting.