From Longman Dictionary of Contemporary Englishterrariumter‧ra‧ri‧um /təˈreəriəm $ -ˈrer-/ noun [countable] a large glass container that you grow plants in as a decoration
Examples from the Corpus
terrarium• The second species, R. humilis, has been imported and is cultivated in aquariums and terrariums.• Kneeling by the side of the terrarium, David suddenly heard voices down below in the kitchen.• David looked across to the terrarium.• Every day, they observed their terrariums for 45 minutes, writing and talking about whatever they saw.• Most of us would, at most, give these terrariums a passing glance.Origin terrarium (1800-1900) Modern Latin Latin terra ( → TERRACE) + -arium (as in aquarium) 