oscnode Geom.
(ˈɒsknəʊd)
[f. osculate + node.]
A node of a plane curve where the two branches have a contact of a higher order.
| 1852 Cayley Wks. II. 28 The oscnode is a double point which is a point of osculation on one of the branches through it. 1873 Salmon Higher Plane Curves 207 Three nodes may coincide as consecutive points of a curve of finite curvature giving rise not to a triple point but to the singularity called an oscnode, this is in fact an osculation or three-pointic contact of two branches of the curve. |