aquarium

noun

aquar·​i·​um ə-ˈkwer-ē-əm 

plural aquariums or aquaria ə-ˈkwer-ē-ə 

1

: a container (such as a glass tank) or an artificial pond in which living aquatic animals or plants are kept

2

: an establishment where aquatic organisms are kept and exhibited

Examples of aquarium in a Sentence

Recent Examples on the Web

Jellyfish are on display in every room, floating along in illuminated aquariums. —Susannah Bryan, Sun Sentinel, 18 Mar. 2026

Netflix saw that and now has Sally Field starring as a lonely aquarium worker who forms a tight bond with an octopus in an aquarium. —Randy Myers, Mercury News, 18 Mar. 2026

This makes sightseeing a breeze, as the line links the property to tourist sites like the shopping mall CentralWorld, the aquarium Sea Life Bangkok Ocean World, the Jim Thompson House Museum (a must for any fan of fashion or Thai silks), the Victory Monument, and more. —Condé Nast, Condé Nast Traveler, 17 Mar. 2026

The Pittsburgh Zoo is considering building a stand-alone aquarium on the North Shore. —Madeline Bartos, CBS News, 17 Mar. 2026

Word History

Etymology

probably alteration of aquatic vivarium

First Known Use

circa 1847, in the meaning defined at sense 1

Phrases Containing aquarium

• tropical aquarium

Rhymes for aquarium

• herbarium
• ovarium
• puparium
• samarium
• zoarium
• armamentarium
• cerium
• honorarium
• planetarium
• sanitarium

Kids Definition

aquarium

noun

aquar·​i·​um ə-ˈkwar-ē-əm 

-ˈkwer-

plural aquariums or aquaria

-ē-ə

: a container (as a glass tank) in which living water animals or plants are kept

also : an establishment where collections of such animals or plants are kept and shown