Word Study
rennin
CIDE DICTIONARY
rennin, n.
A milk-clotting enzyme obtained from the true stomach (abomasum) of a suckling calf. Mol. wt. about 31,000. Also called chymosin , rennase , and abomasal enzyme . [1913 Webster]
OXFORD DICTIONARY
rennin, n. Biochem. an enzyme secreted into the stomach of unweaned mammals causing the clotting of milk.
Etymology
RENNET + -IN
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