/os'kyeuh lay"sheuhn/ , n.
1. the act of kissing.
2. a kiss.
3. close contact.
4. Geom. the contact between two osculating curves or the like.
[ 1650-60; osculation- (s. of osculatio ) a kissing, equiv. to osculat ( us ) (see OSCULATE) + -ion- -ION ]