Phron·​i·​ma | \ˈfränəmə\

Definition of Phronima 

: a genus (the type of the family Phronimidae) of pelagic amphipod crustaceans having one known member (P. sedentaria) that lives in a barrel-shaped case made from the swimming bell of a siphonophore or the test of a tunicate

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History and Etymology for Phronima

New Latin, from Greek phronimos sane, sensible; probably akin to Greek phren-, phrēn diaphragm, mind

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a nest or breeding place

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