/ ˌdɒlfɪˈneəriəm; NAmE ˌdɑːlfɪˈneriəm/ noun
( pl. dol·phin·ariums or dol·phin·aria / -riə; NAmE /) a building with a pool where people can go to see dolphins , especially ones who have been trained to do tricks
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WORD ORIGIN
1960s: from dolphin , on the pattern of oceanarium .