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Webster 1913 Edition
ptyalin
pty′a-lin
(tī′ȧ-lĭn)
, Noun.
[Gr.
πτύαλον
spittle. See Ptyalism
.] (Physiol. Chem.)
An unorganized amylolytic ferment, on enzyme, present in human mixed saliva and in the saliva of some animals.