Definition of ptyalin in English:

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Pronunciation: /ˈtʌɪəlɪn/


[mass noun] Biochemistry
A form of amylase found in the saliva of humans and some other animals.
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.

For editors and proofreaders

Line breaks: ptya|lin

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