Pronunciation: (ub-sesh'un), [key]
1. the domination of one's thoughts or feelings by a persistent idea, image, desire, etc.
2. the idea, image, desire, feeling, etc., itself.
3. the state of being obsessed.
4. the act of obsessing.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.