ob·ses·sion [uhb-sesh-uhn]
noun
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.
Origin:
1505–15; < Latin obsessiōn- (stem of obsessiō ) blockade, siege, equivalent to obsess ( us ) (see obsess) +-iōn- -ion
