1
a
: the contents of the stomach of an unweaned animal and especially a calf
b
: the lining membrane of a stomach or one of its compartments (such as the fourth of a ruminant) used for curdling milk
also
: a preparation of the stomach of animals used for this purpose
Examples of rennet in a Sentence
Recent Examples on the Web
Plant and microbial enzymes are employed for some other cheeses, but since all Parms are made with animal enzymes (rennet).
—
Karla Walsh, Better Homes & Gardens, 19 Oct. 2025
It was historically processed using rennet, an enzyme used in cheese production that separates the milk's curds from its whey.29
Like Greek yogurt, modern production of skyr involves fermenting the milk with Lactobacillus bulgaricus and Streptococcus thermophilus.
—Lauren O'Connor, Ms, Health, 3 Feb. 2025
Participants learn to make halloumi, mozzarella, mascarpone, and butter using raw milk and vegetarian rennet.
—Joseph V Micallef, Forbes, 12 Jan. 2025
The production of blue cheese involves several key steps:
Milk preparation: The milk is warmed and combined with starter cultures and rennet to initiate curdling.
—Katie Rosenhouse, Southern Living, 20 Oct. 2024
See All Example Sentences for rennet
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Karla Walsh, Better Homes & Gardens, 19 Oct. 2025
It was historically processed using rennet, an enzyme used in cheese production that separates the milk's curds from its whey.29
Like Greek yogurt, modern production of skyr involves fermenting the milk with Lactobacillus bulgaricus and Streptococcus thermophilus.
—Lauren O'Connor, Ms, Health, 3 Feb. 2025
Participants learn to make halloumi, mozzarella, mascarpone, and butter using raw milk and vegetarian rennet.
—Joseph V Micallef, Forbes, 12 Jan. 2025
The production of blue cheese involves several key steps:
Milk preparation: The milk is warmed and combined with starter cultures and rennet to initiate curdling.
—Katie Rosenhouse, Southern Living, 20 Oct. 2024
See All Example Sentences for rennet
Cite this Entry
“Rennet.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rennet. Accessed 31 Oct. 2025.
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Medical Definition
rennet
noun
ren·net
ˈren-ət 
1
a
: the contents of the stomach of an unweaned animal and especially a calf
b
: the lining membrane of a stomach or one of its compartments (as the fourth of a ruminant) used for curdling milk
also
: a preparation of the stomach of animals used for this purpose
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