cuspidal, a.
(ˈkʌspɪdəl)
[f. L. cuspid-em + -al1.]
† 1. Belonging to the apex (of a cone). Obs.
| 1647 H. More Song of Soul Notes 160/1 The cuspidall particles of the Cone. |
2. Geom. Having, relating to, or of the nature of, a cusp: see cusp 4.
| 1874 Salmon Geom. three Dimens. §305 The locus of points where two consecutive generators of a developable intersect is a curve..which is called the cuspidal edge of that developable. 1879 ― Higher Plane Curves §209 Cuspidal cubics. |
3. Of teeth: = cuspidate.
| 1867 Bushnell Mor. Uses Dark Th. 274 Cuspidal teeth. |