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Diphyozooid :: Diphyozooid (n.) One of the free-swimming sexual zooids of Siphonophora.

Phragmosiphon :: Phragmosiphon (n.) The siphon of a phragmocone.

Siphonophora :: Siphonophora (n. pl.) An order of pelagic Hydrozoa including species which form complex free-swimming communities composed of numerous zooids of various kinds, some of which act as floats or as swimming organs, others as feeding or nutritive zooids, and others as reproductive zooids. See Illust. under Physallia, and Porpita..

Androphore :: Androphore (n.) The part which in some Siphonophora bears the male gonophores.

Siphon :: Siphon (n.) The anterior prolongation of the margin of any gastropod shell for the protection of the soft siphon.

Siphonia :: Siphonia (pl. ) of Siphoniu.

Siphonophoran :: Siphonophoran (n.) One of the Siphonophora.

Physalia :: Physalia (n.) A genus of large oceanic Siphonophora which includes the Portuguese man-of-war.

Siphoid :: Siphoid (n.) A siphon bottle. See under Siphon, n..

Siphonobranchiate :: Siphonobranchiate (n.) One of the Siphonobranchiata.

Siphon :: Siphon (n.) The sucking proboscis of certain parasitic insects and crustaceans.

Nectocalyx :: Nectocalyx (n.) One of the zooids of certain Siphonophora, having somewhat the form, and the essential structure, of the bell of a jellyfish, and acting as a swimming organ..

Siphonostomatous :: Siphonostomatous (a.) Having the front edge of the aperture of the shell prolonged in the shape of a channel for the protection of the siphon; -- said of certain gastropods.

Velella :: Velella (n.) Any species of oceanic Siphonophora belonging to the genus Velella.

Asiphonida :: Asiphonida (n. pl.) A group of bivalve mollusks destitute of siphons, as the oyster; the asiphonate mollusks..

Nectostem :: Nectostem (n.) That portion of the axis which bears the nectocalyces in the Siphonophora.

Infundibulum :: Infundibulum (n.) The siphon of Cephalopoda. See Cephalopoda.

Siphonal :: Siphonal (a.) Of or pertaining to a siphon; resembling a siphon.

Siphonium :: Siphonium (n.) A bony tube which, in some birds, connects the tympanium with the air chambers of the articular piece of the mandible..

Physaliae :: Physaliae (n. pl.) An order of Siphonophora which includes Physalia.

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