Papain definition

pə-pāĭn, -pīĭn
An enzyme obtained from the unripe fruit of the papaya that catalyzes the lysis of proteins, used especially as a meat tenderizer and digestive aid and formerly in medicine as a topical treatment for wounds.
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A protein-splitting enzyme from the juice of unripe papaya, used as a digestive aid, as a meat tenderizer, in pharmacy, etc.
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An enzyme obtained from the unripe fruit of the papaya that catalyzes the lysis of proteins, used especially as a meat tenderizer and digestive aid and formerly in medicine as a topical treatment for wounds.
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(biochemistry) A proteolytic enzyme in papaya fruit.
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Other Word Forms

Noun

Singular:
papain
Plural:
papains

Origin of papain

  • papa(ya) –in

    From American Heritage Dictionary of the English Language, 5th Edition

  • Circa 19th century, from papaya +"Ž -in.

    From Wiktionary