cuspidal

[kuhs-pi-dl]

adjective

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

Other Word Forms

• intercuspidal 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.

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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.

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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.

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