1. developing from within; originating internally
2. Biology growing or developing from or on the inside
3. Physiology and Biochemistry of the anabolism of cells
Webster’s New World College Dictionary, Fourth Edition, compiled by the
editors of Webster’s New World Dictionaries. Copyright © 2010 by Houghton
Mifflin Harcourt. Published by Houghton Mifflin Harcourt. All rights reserved.