decoction (n.)youdaoicibaDictYouDict[decoction 词源字典]
late 14c., from French décoction (13c.) or directly from Latin decoctionem (nominative decoctio) "a boiling down," noun of action from past participle stem of decoquere "to boil down," from de- "down" (see de-) + coquere "to cook" (see cook (n.)).[decoction etymology, decoction origin, 英语词源]