trop'ical cy'clone

a cyclone that originates over a tropical ocean area and can develop into the destructive storm known in the U.S. as a hurricane, in the western Pacific region as a typhoon, and elsewhere by other names. Cf. extratropical cyclone, hurricane (def. 1), willy-willy.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

tropical aquariumtropical disturbance

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