/ Dictionary / Index T terrarium: Meaning and Definition of Find definitions for: ter•rar•i•um Pronunciation: (tu-râr'ē-um), [key] — pl. -rar•i•ums, -rar•i•a a vivarium for land animals (distinguished from aquarium). a glass container, chiefly or wholly enclosed, for growing and displaying plants. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: terrarium (Thesaurus) terraqueous terra sigillata Related Content Daily Word Quiz: resilient Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language