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单词 ptyalin
释义

WordReference Random House Unabridged Dictionary of American English © 2024
pty•a•lin  (tī′ə lin),USA pronunciation n. [Biochem.]
  1. Biochemistryan enzyme in the saliva that converts starch into dextrin and maltose. Also called salivary amylase. 
  • Greek ptýal(on) spittle, saliva + -in2
  • 1835–45

Collins Concise English Dictionary © HarperCollins Publishers::
ptyalin /ˈtaɪəlɪn/ n
  1. an amylase secreted in the saliva of man and other animals
Etymology: 19th Century: from Greek ptualon saliva, from ptuein to spit
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更新时间：2025/2/23 6:37:00