1. [formal] The act of caressing with the lips (or an instance thereof)
   "She gave him a quick osculation on the cheek before leaving";
   - kiss, buss [N. Amer, informal]
    
2. (mathematics) a contact of two curves (or two surfaces) at which they have a common tangent
   "The osculation of the two curves occurred at a single point"

Derived forms: osculations

Type of: contact, touch, touching

Encyclopedia: Osculation