English definition of Siphon

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Definition of siphon

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Siphon (n.) The tubular organ through which water is ejected from the gill cavity of a cephaloid. It serves as a locomotive organ, by guiding and confining the jet of water. Called also siphuncle. See Illust. under Loligo, and Dibranchiata..

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

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

Asiphonate :: Asiphonate (a.) Destitute of a siphon or breathing tube; -- said of many bivalve shells.

Asiphonate :: Asiphonate (n.) An asiphonate mollusk.

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..

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

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

Siphonostomata :: Siphonostomata (n. pl.) An artificial division of gastropods including those that have siphonostomatous shells.

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

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

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

Sprack :: Spoutshell (n.) Any marine gastropod shell of the genus Apporhais having an elongated siphon. See Illust. under Rostrifera.

Siphonophoran :: Siphonophoran (a.) Belonging to the Siphonophora.

Siphonate :: Siphonate (a.) Belonging to the Siphonata.

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

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

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.

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..

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

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..