siphonophore
Concise Oxford English Dictionary © 2008 Oxford University Press:
siphonophore /sʌɪˈfɒnəfɔː/
▶noun Zoology a colonial marine coelenterate of the order Siphonophora, having a float or swimming bell for drifting or swimming on the open sea, e.g. a Portuguese man-of-war.
– origin from mod. L. Siphonophora, from Gk siphōn ‘tube’ + pherein ‘to bear’.
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