n.
Pronunciation: äb- ' se-sh ə n, ə b-
Function: noun
Date: 1680
1 : a persistent disturbing preoccupation with an often unreasonable idea or feeling broadly : compelling motivation <an obsession with profits>
2 : something that causes an obsession
– ob · ses · sion · al \ - ' sesh-n ə l, - ' se-sh ə -n ə l \ adjective
– ob · ses · sion · al · ly adverb