Pronunciation: (sub'klas", -kläs"), [key]
1. a primary division of a class.
2. a subordinate class, esp. one of persons who lack the rights and privileges of the primary class: a subclass of alien workers.
3. Biol.a category of related orders within a class.
to place in a subclass.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.