1. 1. The place names of a region or language.
   2. The study of such place names.
2. Anatomy. Nomenclature with respect to a region of the body rather than to organs or structures.

The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.