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Siphon :: Siphon (n.) A sproutlike prolongation in front of the mouth of many gephyreans.

Siphonostomatous :: Siphonostomatous (a.) Pertaining to the Siphonostomata.

Physophorae :: Physophorae (n. pl.) An order of Siphonophora, furnished with an air sac, or float, and a series of nectocalyces. See Illust. under Nectocalyx..

Taster :: Taster (n.) One of a peculiar kind of zooids situated on the polyp-stem of certain Siphonophora. They somewhat resemble the feeding zooids, but are destitute of mouths. See Siphonophora..

Tube :: Tube (n.) One of the siphons of a bivalve mollusk.

Tube-shell :: Tube-shell (n.) Any bivalve mollusk which secretes a shelly tube around its siphon, as the watering-shell..

Siphonata :: Siphonata (n. pl.) A tribe of bivalve mollusks in which the posterior mantle border is prolonged into two tubes or siphons. Called also Siphoniata. See Siphon, 2 (a), and Quahaug..

Siphonet :: Siphonet (n.) One of the two dorsal tubular organs on the hinder part of the abdomen of aphids. They give exit to the honeydew. See Illust. under Aphis.

Siphonate :: Siphonate (a.) Having a siphon or siphons.

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

Siphonia :: Siphonia (pl. ) of Siphoniu.

Siphonage :: Siphonage (n.) The action of a siphon.

Siphoniata :: Siphoniata (n. pl.) Same as Siphonata.

Prosiphon :: Prosiphon (n.) A minute tube found in the protoconch of ammonites, and not connected with the true siphon..

Pneumonophora :: Pneumonophora (n. pl.) The division of Siphonophora which includes the Physalia and allied genera; -- called also Pneumatophorae.

Siphonostomata :: Siphonostomata (n. pl.) A tribe of parasitic copepod Crustacea including a large number of species that are parasites of fishes, as the lerneans. They have a mouth adapted to suck blood..

Pneumatocyst :: Pneumatocyst (n.) A cyst or sac of a siphonophore, containing air, and serving as a float, as in Physalia..

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

Porpita :: Porpita (n.) A genus of bright-colored Siphonophora found floating in the warmer parts of the ocean. The individuals are round and disk-shaped, with a large zooid in the center of the under side, surrounded by smaller nutritive and reproductive zooids, and by slender dactylozooids near the margin. The disk contains a central float, or pneumatocyst..

Physograde :: Physograde (n.) Any siphonophore which has an air sac for a float, as the Physalia..

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