Pronunciation: (si-stem'ik), [key]
1. of or pertaining to a system.
2. Physiol., Pathol.
a. pertaining to or affecting the body as a whole.
b. pertaining to or affecting a particular body system.
3. (of a pesticide) absorbed and circulated by a plant or other organism so as to be lethal to pests that feed on it.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.