'ptyalin' definitions:

Definition of 'ptyalin'

(from WordNet)
noun
An amylase secreted in saliva

Definition of 'ptyalin'

From: GCIDE
  • ptyalin \pty"a*lin\ (t[imac]"[.a]*l[i^]n), n. [Gr. pty`alon spittle. See Ptyalism.] (Physiol. Chem.) An unorganized amylolytic ferment, on enzyme, present in human mixed saliva and in the saliva of some animals. [1913 Webster]