osculatrix
(ɒskjuːˈleɪtrɪks)
[mod.L., fem. of *osculātor, agent-n. from osculārī to kiss, osculate.]
(See quot.)
| 1864 in Webster. 1866 Brande & Cox Dict. Sci. etc., Developable Osculatrix, the developable surface generated by the tangents of a non-plane curve. Every tangent plane of the surface is an osculating plane of the curve. |