osculate
— Verb
– English
～ touch with the lips or press the lips (against someone's mouth or other body part) as an expression of love, greeting, etc.; "The newly married couple kissed"; "She kissed her grandfather on the forehead when she entered the room"
osculate
— Verb
– English
～ have at least three points in common with; "one curve osculates the other"; "these two surfaces osculate"
osculate
— Verb
– English
～ be intermediate between two taxonomic groups; "These species osculate"
osculating circle
— Noun
– English
～ the circle that touches a curve (on the concave side) and whose radius is the radius of curvature
osculation
— Noun
– English
～ (mathematics) a contact of two curves (or two surfaces) at which they have a common tangent
osculation
— Noun
– English
～ the act of caressing with the lips (or an instance thereof)