noun Pathology.
  1. dryness of the mouth caused by diminished function of the salivary glands due to aging, disease, drug reaction, etc.

Origin of xerostomia

1885–90; xero- + New Latin -stomia a condition of the mouth, as specified by the 1st element; see -stome, -ia
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Examples from the Web for xerostomia

Historical Examples of xerostomia

British Dictionary definitions for xerostomia


  1. abnormal lack of saliva; dryness of the mouth

Word Origin for xerostomia

C19: from xero- + -stom (e) + -ia
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

xerostomia in Medicine


  1. Dryness of the mouth resulting from diminished or arrested salivary secretion.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.