Pronunciation: (kum-pul'shun), [key]
1. the act of compelling; constraint; coercion.
2. the state or condition of being compelled.
3. Psychol.a strong, usually irresistible impulse to perform an act, esp. one that is irrational or contrary to one's will.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.