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

The aquarium is part of a wellness area comprising a hammam, sauna, massage room, cryotherapy, and a relaxation area with an opening terrace. —Rachel Cormack, Robb Report, 10 Apr. 2026

In a news release shared by the aquarium, visitors were invited to see the large turtle in person at their new sea turtle rehabilitation area starting on Wednesday, April 8. —Dean Fioresi, CBS News, 9 Apr. 2026

Meatloaf now swims in the aquarium’s sea turtle rehabilitation area, which opened in January. —Cierra Morgan, Los Angeles Times, 9 Apr. 2026

Hooper Schneider will present work in a onetime public aquarium, while Cooper Jacoby and Li-Yi Fan, among others, will show work incorporating emerging technologies. —News Desk, Artforum, 8 Apr. 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