Definition of rennet in English:


Syllabification: ren·net
Pronunciation: /ˈrenit


  • 1Curdled milk from the stomach of an unweaned calf, containing rennin and used in curdling milk for cheese.
    More example sentences
    • Instead of being curdled with rennet as most cheeses are nowadays, the milk is soured with lactic acid-producing bacteria and left to separate naturally.
    • Milk in cheese production is curdled using chymosin - an enzyme present in rennet, found in calves' stomachs.
    • The seeds of the fruits are diuretic and can be used as a substitute for rennet to curdle milk.
  • 1.1Any preparation containing rennin, especially a pudding.


late 15th century: probably related to run.

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