Definition of ptyalin in English:


Syllabification: pty·a·lin
Pronunciation: /ˈtīələn


  • A form of amylase found in the saliva of humans and some other animals.
    More example sentences
    • It begins in the mouth where the enzyme ptyalin, present in saliva, begins to break down starch in food to sugars.
    • The saliva of carnivora contains no ptyalin and cannot predigest starches; that of vegetarian animals contains ptyalin for the predigestion of starches.


mid 19th century: from Greek ptualon 'spittle' + -in1.

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