any marine colonial hydrozoan of the order Siphonophora, including the Portuguese man-of-war
WordReference Random House Unabridged Dictionary of American English © 2025
si•pho•no•phore
(sī′fə nə fôr′, -fōr′, sī fon′ə-),USA pronunciation n.
si•pho•noph•o•rous
(sī′fə nof′ər əs),USA pronunciation adj.
- Microbiologyany pelagic hydrozoan of the order Siphonophora, being a floating or swimming colony composed of polyps.
- Greek siphōnophór(os) tube-carrying (equivalent. to siphōno- siphono- + -phóros -phore) + -a neuter plural noun, nominal suffix
- Neo-Latin Siphonophora name of the order
- 1835–45;
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'siphonophore' also found in these entries (note: many are not synonyms or translations):