an enzyme in the saliva that converts starch into dextrin and maltose.
(biochem) an amylase secreted in the saliva of man and other animals
ptyalin pty·a·lin (tī’ə-lĭn)
An amylase present in saliva that catalyzes the hydrolysis of starch into maltose and dextrin.
An enzyme found in the saliva of humans and herbivorous animals that helps in the predigestion of starches. Ptyalin is a type of amylase.
noun, Pathology. 1. excessive secretion of saliva. noun 1. excessive secretion of saliva ptyalism pty·a·lism (tī’ə-lĭz’əm) n. Excessive flow of saliva. Also called hypersalivation, salivation, sialism, sialismus, sialorrhea, sialosis.
ptyalo- or ptyal- pref. Saliva; salivary glands: ptyalocele.
ptyalocele pty·a·lo·cele (tī’ə-lō-sēl’) n. See ranula.
adjective 1. (of a semiconductor) having a density of mobile holes in excess of that of conduction electrons 2. associated with or resulting from the movement of holes in a semiconductor: p-type conductivity Compare n-type P-type Made of material, usually a semiconductor such as silicon, that has been doped with impurities so that it has […]
Symbol, Chemistry. 1. plutonium. Chemical symbol 1. plutonium Pu The symbol for the element plutonium. Pu The symbol for plutonium. plutonium (pl-tō’nē-əm) Symbol Pu A silvery, radioactive metallic element of the actinide series that has the highest atomic number of all naturally occurring elements. It is found in minute amounts in uranium ores and is […]