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ptyalin
pty·a·lin [ t əlin ]


noun 
Definition:
 
enzyme that converts starch into sugar: an enzyme in saliva that catalyzes the digestion of starches
[Mid-19th century. < Greek ptualon "saliva"]
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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