ptyalinPronunciation: /ˈtʌɪəlɪn/Definition of ptyalin noun [mass noun] Biochemistry a form of amylase found in the saliva of humans and some other animals. Origin: mid 19th century: from Greek ptualon 'spittle' + -in1ptyalin in other Oxford dictionaries Definition of ptyalin in the US English dictionary
