aquar·ium [aquarium aquaria aquariums] [əˈkweəriəm] [əˈkweriəm] noun (pl. aquar·iums or aqua·ria [əˈkweəriə] ; [əˈkweriə] )
1. a large glass container in which fish and other water creatures and plants are kept
2. a building where people can go to see fish and other water creatures
Word Origin:
mid 19th cent.: from Latin, neuter of aquarius ‘of water’, on the pattern of vivarium.