aquarium
n. countablen. a glass tank or large public building where you keep fish and other sea creatures for people to watch.
n. a transparent tank or enclosed facility for keeping and displaying aquatic animals and plants.
We kept goldfish in a small glass aquarium.
The local aquarium features a large tank with sharks and colorful tropical fish.
The new marine aquarium uses advanced filtration systems to maintain water quality for delicate coral reefs.
Etymology tree Proto-Indo-European *h₂ékʷeh₂ Proto-Italic *akʷā Latin aqua Proto-Indo-European *-yósder. Proto-Italic *-āsios Latin -ārius Latin aquārius Latin aquāriumbor. English aquarium Borrowed from Latin aquārium, neuter of aquārius (“of or pertaining to water”), from aqua + -arium. Doublet of ewer; see also Aquarius. Also claimed to be coined by English naturalist Philip Henry Gosse, as a blend of aquatic + vivarium.