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

Calamary :: Calamary (n.) A cephalopod, belonging to the genus Loligo and related genera. There are many species. They have a sack of inklike fluid which they discharge from the siphon tube, when pursued or alarmed, in order to confuse their enemies. Their shell is a thin horny plate, within the flesh of the back, shaped very much like a quill pen. In America they are called squids. See Squid..

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.

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

Hydrophyllium :: Hydrophyllium (n.) One of the flat, leaflike, protective zooids, covering other zooids of certain Siphonophora..

Siphon :: Siphon (n.) One of the tubes or folds of the mantle border of a bivalve or gastropod mollusk by which water is conducted into the gill cavity. See Illust. under Mya, and Lamellibranchiata..

Somatocyst :: Somatocyst (n.) A cavity in the primary nectocalyx of certain Siphonophora. See Illust. under Nectocalyx.

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

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

Hydrozoa :: Hydrozoa (n. pl.) The Acalephae; one of the classes of coelenterates, including the Hydroidea, Discophora, and Siphonophora..

Siphon :: Siphon (v. t.) To convey, or draw off, by means of a siphon, as a liquid from one vessel to another at a lower level..

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.

Asiphonata :: Asiphonata (n. pl.) Alt. of Asiphonid.

Siphonobranchiate :: Siphonobranchiate (a.) Having a siphon, or siphons, to convey water to the gills; belonging or pertaining to the Siphonobranchiata..

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

Siphonic :: Siphonic (a.) Of or pertaining to a siphon.

Siphon :: Siphon (n.) A tubular organ connected both with the esophagus and the intestine of certain sea urchins and annelids.

Siphonostome :: Siphonostome (n.) Any parasitic entomostracan of the tribe Siphonostomata.

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

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

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