Pronunciation: (prē-dis"pu-zish'un, prē"dis-), [key]
1. the fact or condition of being predisposed: a predisposition to think optimistically.
2. Med.tendency to a condition or quality, usually based on the combined effects of genetic and environmental factors.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.