rennin

noun

ren·nin | \ ˈre-nən

How to pronounce rennin (audio)

\

Definition of rennin

: 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

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The first known use of rennin was in 1889

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rennin

noun

ren·nin | \ ˈren-ən

\

Medical Definition of rennin

: 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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