/ Dictionary / Index T tropical aquarium: Meaning and Definition of Find definitions for: trop'ical aquar'ium Pronunciation: [key] an aquarium designed for the maintenance and breeding of tropical fish and kept at a suitably warm temperature. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. tropical tropical cyclone Related Content Daily Word Quiz: exemplary Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language