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{{Also|Cuspid}}
{{wiktionary|cusp}}

A '''cusp''' is the most pointed end of a curve. It often refers to [[cusp (anatomy)]], a pointed structure on a tooth.

'''Cusp''' or '''CUSP''' may also refer to:
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==Mathematics==
* [[Cusp (singularity)]], a singular point of a curve
* [[Cusp catastrophe]], a branch of bifurcation theory in the study of dynamical systems
* [[Cusp form]], in modular form theory
* [[Cusp neighborhood]], a set of points near a cusp
* [[Cuspidal representation]], a generalization of cusp forms in the theory of automorphic representations

==Science and medicine==
* [[Beach cusps]], a pointed and regular arc pattern of the shoreline at the beach
* [[Behavioral cusp]], a change in behavior with far-reaching consequences
* [[Caltech-USGS Seismic Processing]], software for analyzing earthquake data
* [[Center for Urban Science and Progress]], a graduate school of New York University focusing on urban informatics
* [[CubeSat for Solar Particles]], a satellite launched in 2022
* [[Cusp (anatomy)]], a pointed structure on a tooth
* [[Cusps of heart valves]], leaflets of a heart valve
* Nuclear cusp condition, in [[electron density]]

==Other uses==
* [[Cusp (astrology)]]
* [[Cusp (film)|''Cusp'' (film)]], a 2021 American documentary following three teenage girls at the end of summer
* [[Cusp (novel)|''Cusp'' (novel)]], a 2005 science fiction story by Robert A. Metzger
* [[Cusp Conference]], an annual gathering of thinkers, innovators, etc. from various fields
* [[Cusp generation]], a name given to those born during the transitional years of two generations
* [[Concordia University, St. Paul]]

{{disambiguation}}