| 释义 |
crunode Geom.|ˈkruːnəʊd|
[Irreg. f. L. crux cross + node.]
A point on a curve where it crosses itself; a node with two real tangents.
1873Salmon Higher Plane Curves 22 In the first case the tangents are both real..such a point is termed a crunode.
Hence cruˈnodal a., having a crunode.
1873Salmon Higher Plane Curves 126 Nodal cubics may obviously be subdivided into crunodal and acnodal. |