1. Of, relating to, or characteristic of plants or their growth.
2. Biology.
   1. Of, relating to, or capable of growth.
   2. Of, relating to, or functioning in processes such as growth or nutrition rather than sexual reproduction.
   3. Of or relating to asexual reproduction, such as fission or budding.
3. Spending much time sitting or lying down; physically inactive.
4. Medicine. Of or relating to an impaired level of brain function in which a person responds to certain sensory stimuli but demonstrates no cognitive function.

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.