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(loosely) A rapidly rotating storm system characterized by a low-pressure center, strong winds, and a circular or spiral arrangement of thunderstorms that produce heavy rain, ranging in increasing strength from tropical depressions and tropical storm to hurricanes.

Hurricane Florence viewed from the International Space Station in 2018. The eye, eyewall, and surrounding rainbands are characteristics of tropical cyclones.

(strictly) A typhoon; a hurricane.

A diagram of a tropical cyclone in the Northern Hemisphere

(loosely) A rapidly rotating storm system characterized by a low-pressure center, strong winds, and a circular or spiral arrangement of thunderstorms that produce heavy rain, ranging in increasing strength from tropical depressions and tropical storm to hurricanes.

Hurricane Paulette, in 2020, is an example of a sheared tropical cyclone, with deep convection slightly removed from the center of the system.