- the membrane lining the stomach of an unweaned animal, esp. the fourth stomach of a calf
- the contents of such a stomach
- an extract of this membrane or of the stomach contents, containing rennin and used to curdle milk, as in making cheese or junket
- any substance used to curdle milk
Origin of rennetMiddle English rennen, to cause to coagulate ; from Old English gerennan ; from ge-, together (see co-) + Germanic an unverified form rannjan, to cause to run ; from base of an unverified form rinnan (from source run) + an unverified form -jan, causative suffix
- An extract made from the inner lining of the fourth stomach of a calf or other young ruminant, used in cheesemaking to curdle milk.
- A similar enzyme-containing substance obtained from certain other animals, plants, fungi, or bacteria.
Origin of rennetMiddle English, probably from Old English *rynet; see rei- in Indo-European roots.
(countable and uncountable, plural rennets)
- A kind of apple.