a. [f. L. cuspid-em + -AL.]

1

  † 1.  Belonging to the apex (of a cone). Obs.

2

1647.  H. More, Song of Soul, Notes 160/1. The cuspidall particles of the Cone.

3

  2.  Geom. Having, relating to, or of the nature of, a cusp: see CUSP 4.

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. Ibid. (1879), Higher Plane Curves, § 209. Cuspidal cubics.

5

  3.  Of teeth: = CUSPIDATE.

6

1867.  Bushnell, Mor. Uses Dark Th., 274. All claws and cuspidal teeth.

7