胃蛋白酶 wèidànbáiméi pepsin Origin Definitions Defs Strokes Stroke Words Sentences Sents 胃 wèi noun stomach the organ in the body where food is digested蛋白酶 dànbáiméi protease An enzyme that breaks down proteins into amino acids for absorption; it plays a key role in metabolism and biological regulation and is found mainly in humans and animals.