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Noun: osculation  ,ós-kyu'ley-shun
  1. (mathematics) a contact of two curves (or two surfaces) at which they have a common tangent
     
  2. The act of caressing with the lips (or an instance thereof)
    - kiss, buss [N. Amer, informal]

Derived forms: osculations

Type of: contact, touch, touching

Encyclopedia: Osculation