tooth

Science Dictionary
tooth   (tth)  Pronunciation Key 


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Plural teeth (tēth)
  1. Any of the hard bony structures in the mouth used to grasp and chew food and as weapons of attack and defense. In mammals and many other vertebrates, the teeth are set in sockets in the jaw. In fish and amphibians, they grow in and around the palate. See also dentition.

  2. A similar structure in certain invertebrate animals.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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