rennin

noun

ren·​nin ˈre-nən How to pronounce rennin (audio)
: 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

Time Traveler
The first known use of rennin was in 1889

Dictionary Entries Near rennin

Cite this Entry

“Rennin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rennin. Accessed 21 Apr. 2024.

Kids Definition

rennin

noun
ren·​nin ˈren-ən How to pronounce rennin (audio)
: a stomach enzyme that curdles milk

Medical Definition

rennin

noun
ren·​nin ˈren-ən How to pronounce rennin (audio)
: 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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