Definition of "rennet" [ren•net]

• The inner lining of the fourth stomach of calves and other young ruminants. (noun)
• A dried extract made from the stomach lining of a ruminant, used in cheesemaking to curdle milk. (noun)
• See rennin. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Cheese and onion crisps do contain rennet, which is a meat by product."
• "The liquor from the rennet is then added, and, being well stirred in, the tub is closely covered and kept in a warm temperature till the coagulation is complete, which is generally in little more than half an hour."
• "The rennet is then taken out, and the milk well stirred; after which it is left till the curd has formed, which is generally in about three quarters of an hour."