Wiktionary:Word of the day/2022/April 19

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Word of the day
for April 19
calcine v
  1. (transitive)
    1. (alchemy, historical) To heat (a substance) to remove its impurities and refine it.
    2. (chemistry) 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.
    3. (by extension) To heat (something) to dry and sterilize it.
    4. (figuratively)
      1. To purify or refine (something).
      2. To burn up (something) completely; to incinerate; hence, to destroy (something).
  2. (intransitive, chemistry) Of a substance: to undergo heating so as to oxidize it.

calcine n

  1. Something calcined; also, material left over after burning or roasting.
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