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bluefin tuna

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noun blue·fin tuna \ˈblü-ˌfin-\

Definition of bluefin tuna

: a very large tuna (Thunnus thynnus) that is an important food and game fish —called also bluefin

First Known Use of bluefin tuna

1909

Learn More about bluefin tuna

Britannica.com: Encyclopedia article about bluefin tuna

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