单词	rennin
释义	rennin noun ren·​nin ˈre-nən  : an enzyme that coagulates milk and is used in making cheese and junkets especially : one from the mucous membrane of the stomach of a calf Word History Etymology rennet + -in entry 1 First Known Use 1889, in the meaning defined above Medical Definition rennin noun ren·​nin ˈren-ən  : a crystallizable enzyme that coagulates milk, that occurs especially with pepsin in the gastric juice of young animals and is obtained as a yellowish powder, grains, or scales usually by extraction of the mucous membrane of the fourth stomach of calves, and that is used chiefly in making cheese and casein for plastics called also chymosin
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