Definition of aquarium noun from the Oxford Advanced American Dictionary

     

    aquarium

     noun
    noun
    NAmE//əˈkwɛriəm//
     
    (pl. aquariums or aquaria
    NAmE//‑iə//
     
    )
     
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  1. 1a large glass container in which fish and other water creatures, and plants are kept
  2. 2a building where people can go to see fish and other water creatures
See the Oxford Advanced Learner's Dictionary entry: aquarium