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

Rent bikes to explore the 22-mile Strand paved biking and running path, or visit nearby Venice Beach for people watching and Manhattan Beach for volleyball and a free aquarium. —Dave Parfitt, USA Today, 30 May 2026

Altogether, the projects are meant to build on previous additions like the aquarium and the giraffe complex. —Kendrick Calfee, Kansas City Star, 30 May 2026

Of course, there is the matter of Atlantis, the mega resort that dominates the island with a water park, shopping, an aquarium, and a casino. —Condé Nast, Condé Nast Traveler, 29 May 2026

The resort will also feature a waterpark, aquarium attractions, sports academies, and beach clubs. —Jim Dobson, Forbes.com, 27 May 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

• cerium
• armamentarium
• herbarium
• ovarium
• puparium
• samarium
• solarium
• zoarium
• 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