noun, plural oceanariums, oceanaria [oh-shuh-nair-ee-uh] .
a large saltwater aquarium for the display and observation of fish and other marine life.

1935–40; ocean + -arium, modelled on aquarium

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World English Dictionary
oceanarium (ˌəʊʃəˈnɛərɪəm)
n , pl -iums, -ia
a large saltwater aquarium for marine life

Collins English Dictionary - Complete & Unabridged 10th Edition
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Encyclopedia Britannica


saltwater aquarium for displaying marine animals and plants, particularly oceanic, or pelagic, fishes and mammals. It serves as a centre for public entertainment and education and scientific study. Most oceanariums are located in coastal areas. The world's first large oceanarium, now known as Marineland (q.v.), was completed in 1938 near St. Augustine, Fla., U.S

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
The oceanarium was holding the skua in isolation before introducing it to other animals in an exhibit.
There are also tennis courts, a water park, an indoor pool and an oceanarium where guests can swim with dolphins.
Marine mammal trainers often start by volunteering at an oceanarium or zoo.
Employee interviews were conducted and the oceanarium ventilation system was evaluated.
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