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| pep·sin [ pépsin ] |
noun |
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| Definition: |
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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.
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| [Mid-19th century. < Greek pepsis "digestion" < peptein "to digest"] |
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