Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “aquarium”


noun [C]     /əˈkweə.ri.əm/ US  /-ˈkwer.i-/ (plural aquariums or aquaria   //   )
a glass container in which fish and other water creatures can be kept Animal Dwellings - man-madeAnimal dwellings - natural a building , usually open to the public , that holds many aquariumsZoos and wildlife reserves
(Definition of aquarium noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of aquarium

Definitions of “aquarium” in other dictionaries

Word of the Day

best man

a male friend or relation of the bridegroom who stands with him and helps him during a marriage ceremony

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More