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 (sī-fŏn′ə-fôr′, sī′fə-nə-)
Any of various transparent, often subtly colored marine hydrozoans of the order Siphonophora, consisting of a delicate floating or swimming colony of specialized zooids and including the Portuguese man-of-war.

[From New Latin Sīphōnophora, order name : Greek sīphō, tube + Greek -phora, neuter pl. of -phoros, -phore.]


(ˈsaɪfənəˌfɔː; saɪˈfɒnə-)
(Animals) any marine colonial hydrozoan of the order Siphonophora, including the Portuguese man-of-war
[C19: from New Latin siphonophora, from Greek siphōnophoros tube-bearing]
siphonophorous adj


(ˈsaɪ fə nəˌfɔr, -ˌfoʊr, saɪˈfɒn ə-)

a floating or swimming marine hydrozoan, of the order Siphonophora, that is composed of polyps.
[1835–45; < New Latin Siphonophora < Greek, neuter pl. of siphōnophóros tube-carrying]
si`pho•noph′o•rous (-ˈnɒf ər əs) adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.siphonophore - a floating or swimming oceanic colony of polyps often transparent or showily colored
hydroid, hydrozoan - colonial coelenterates having the polyp phase dominant
order Siphonophora, Siphonophora - marine colonial hydrozoans
nanomia - small creatures resembling pieces of fuzzy rope; each with a cluster of swimming bells serving as the head and long elastic tentacles for drawing in prey
jellyfish, Portuguese man-of-war, man-of-war - large siphonophore having a bladderlike float and stinging tentacles
praya - colonial siphonophore of up to 130 ft long
apolemia - large siphonophore of up to 50 ft long
References in periodicals archive ?
It's a collection of polyps, or siphonophore, and rather a nasty one at that.
After all, how many parents knew what a siphonophore or a yeti crab was at age three?
Shoals of luminous creatures swim by, including a group of angler fish, some yeti crabs and an enormous siphonophore.
Caption: Siphonophore Physophora hydrostatica, hula skirt siphonophore
Among the most eye-catching was the siphonophore, the world's longest animal that can extend for up to 150ft, bristling with poisonous tentacles.
Three keys to siphonophore families and related species are included.
Although the man o' war resembles a jellyfish it is actually a siphonophore - a colony of four kinds of minute, highly modified creatures, each dependent on the others for survival.
It is actually a siphonophore - a colony of tiny specialised polyps and medusoids.
CREEP SEA: From left, a physonect siphonophore jellyfish, yeti crab, vent annelid worm and, below, a cydippid comb jelly' FISH FEATURES: The amazing photos of the lantern fish, left, the syrtensis octopus, top, and the radiolarian amoeba, above