cuspidal

[ kuhs-pi-dl ]

adjective

1. of, like, or having a cusp; cuspidate.

Other Words From

• inter·cuspi·dal adjective

Word History and Origins

Origin of cuspidal¹

1640–50; < Latin cuspid- (stem of cuspis ) point + -al ¹

Example Sentences

For a cuspidal cubic the six imaginary inflections and two of the real inflections disappear, and there remains one real inflection.

From Project Gutenberg

Each singular kind presents itself as a limit separating two kinds of inferior singularity; the cuspidal separates the crunodal and the acnodal, and these last separate from each other the complex and the simplex.

From Project Gutenberg

The singular kinds arise as before; in the crunodal and the cuspidal kinds the whole curve is an odd circuit, but in an acnodal kind the acnode must be regarded as an even circuit.

From Project Gutenberg