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Look up in Wiktionary, the free dictionary.cusp |

**Cusp** may refer to:

- 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

- Cusp (anatomy), a pointed structure on a tooth
- CUSP (Caltech-USGS Seismic Processing), a seismology software for analyzing earthquake data
- Beach cusps, a pointed and regular arc pattern of the shoreline at the beach
- Behavioral cusp, a change in behavior with far-reaching consequences
- CubeSat for Solar Particles, or CUSP, a planned NASA satellite
- Cusps of heart valves, leaflets of a heart valve

- Cusp (astrology)
*Cusp*(novel), a 2005 science-fiction story by Robert A. Metzger- Center for Urban Science and Progress, or CUSP, a research institute planned for New York
- Cusp Conference, an annual gathering
- Cusp generation, a name given to those born during the transitional years of two generations
- Cusp, Auckland, New Zealand Based Based Electronic Musician