[mass noun]the process of breaking down food by mechanical and enzymatic action in the stomach and intestines into substances that can be used by the body (食物的)消化 ■[count noun]a person's capacity to break down food in such a way 消化能力 he suffered with his digestion. 他因消化不好而难受。 ■(Chemistry)the process of treating a substance by means of heat, enzymes, or a solvent to promote decomposition or extract essential components (化)蒸煮,(使用酶或溶剂的)分解,提炼
语源
late Middle English: via Old French from Latin digestio(n-), from the verb digerere (see digest)