- 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: ME rennen, to cause to coagulate < OE gerennan < ge-, together (see co-) + Gmc *rannjan, to cause to run < base of *rinnan (> run) + *-jan, caus. suffix
Used by arrangement with John Wiley & Sons, Inc.
- The inner lining of the fourth stomach of calves and other young ruminants.
- A dried extract made from the stomach lining of a ruminant, used in cheesemaking to curdle milk.
- See rennin.
Origin: Middle English, probably from Old English *rynet; see rei- in Indo-European roots.