Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of spiral is as below...

Ganoidei :: Ganoidei (n. pl.) One of the subclasses of fishes. They have an arterial cone and bulb, spiral intestinal valve, and the optic nerves united by a chiasma. Many of the species are covered with bony plates, or with ganoid scales; others have cycloid scales..

Volute :: Volute (n.) A spiral turn, as in certain shells..

Serpula :: Serpula (n.) Any one of numerous species of tubicolous annelids of the genus Serpula and allied genera of the family Serpulidae. They secrete a calcareous tube, which is usually irregularly contorted, but is sometimes spirally coiled. The worm has a wreath of plumelike and often bright-colored gills around its head, and usually an operculum to close the aperture of its tube when it retracts..

Spiral :: Spiral (a.) Winding round a cylinder or imaginary axis, and at the same time rising or advancing forward; winding like the thread of a screw; helical..

Limacina :: Limacina (n.) A genus of small spiral pteropods, common in the Arctic and Antarctic seas. It contributes to the food of the right whales..

Gyroidal :: Gyroidal (a.) Spiral in arrangement or action.

Umbilicus :: Umbilicus (n.) A depression or opening in the center of the base of many spiral shells.

Turrilite :: Turrilite (n.) Any fossil ammonite of the genus Turrilites. The shell forms an open spiral with the later whorls separate.

Concho-spiral :: Concho-spiral (n.) A kind of spiral curve found in certain univalve shells.

Air Vessel :: Air vessel () A vessel, cell, duct, or tube containing or conducting air; as the air vessels of insects, birds, plants, etc.; the air vessel of a pump, engine, etc. For the latter, see Air chamber. The air vessels of insects are called tracheae, of plants spiral vessels..

Curl :: Curl (v. i.) To move in curves, spirals, or undulations; to contract in curving outlines; to bend in a curved form; to make a curl or curls..

Parastichy :: Parastichy (n.) A secondary spiral in phyllotaxy, as one of the evident spirals in a pine cone..

Spiral :: Spiral (a.) Winding or circling round a center or pole and gradually receding from it; as, the spiral curve of a watch spring..

Dextrorse :: Dextrorse (a.) Turning from the left to the right, in the ascending line, as in the spiral inclination of the stem of the common morning-glory..

Cable :: Cable (n.) A molding, shaft of a column, or any other member of convex, rounded section, made to resemble the spiral twist of a rope; -- called also cable molding..

Spiry :: Spiry (a.) Of a spiral form; wreathed; curled; serpentine.

Helical :: Helical (a.) Of or pertaining to, or in the form of, a helix; spiral; as, a helical staircase; a helical spring..

Antlia :: Antlia (n.) The spiral tubular proboscis of lepidopterous insects. See Lepidoptera.

Heterodromous :: Heterodromous (a.) Having spirals of changing direction.

Helicoid :: Helicoid (a.) Spiral; curved, like the spire of a univalve shell..

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