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peppergrass
pepperidge
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pepsin
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pepsin

pep·sin [ pépsin ]


noun 
Definition:
 
stomach enzyme that digests protein: an enzyme produced in the stomach that breaks down proteins into simpler compounds. It can be extracted from the stomachs of calves and hogs for use as a digestive aid and in the production of cheese.

[Mid-19th century. < Greek pepsis "digestion" < peptein "to digest"]
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