Pronunciation: (sub'di-vizh"un), [key]
1. the act or fact of subdividing.
2. a product of subdividing, as a section of a department.
3. a portion of land divided into lots for real-estate development.
4. Bot., Mycol.a category of related classes within a division or phylum.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.