calx
(now chiefly historical) The substance which remains after a metal or mineral has been thoroughly burnt, once seen as being the essential substance left after the expulsion of phlogiston, but now recognised as being the metallic oxide (or, in some cases, the metal in a state of sublimation).
Third-person singular simple present indicative form of reutilise
Synonym of bottle flipping
(immunology) The conversion of an existing immune response to respond to a new allergen
何度も加熱した後、化学者はるつぼに残った金属の酸化物を調べ、それが金属の酸化物であることを確認した。
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