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...

Tube :: Tube (n.) A more or less cylindrical, and often spiral, case secreted or constructed by many annelids, crustaceans, insects, and other animals, for protection or concealment. See Illust. of Tubeworm..

Tracheid :: Tracheid (n.) A wood cell with spiral or other markings and closed throughout, as in pine wood..

Whirlwind :: Whirlwind (n.) A violent windstorm of limited extent, as the tornado, characterized by an inward spiral motion of the air with an upward current in the center; a vortex of air. It usually has a rapid progressive motion..

Turban :: Turban (n.) The whole set of whorls of a spiral shell.

Twisted :: Twisted (a.) Contorted; crooked spirally; subjected to torsion; hence, perverted..

Turbinal :: Turbinal (a.) Rolled in a spiral; scroll-like; turbinate; -- applied to the thin, plicated, bony or cartilaginous plates which support the olfactory and mucous membranes of the nasal chambers..

Helicine :: Helicine (a.) Curled; spiral; helicoid; -- applied esp. to certain arteries of the penis.

Homodromous :: Homodromous (a.) Running in the same direction; -- said of stems twining round a support, or of the spiral succession of leaves on stems and their branches..

Vertigo :: Vertigo (n.) Any one of numerous species of small land snails belonging to the genus Vertigo, having an elongated or conical spiral shell and usually teeth in the aperture..

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..

Vessel :: Vessel (n.) A continuous tube formed from superposed large cylindrical or prismatic cells (tracheae), which have lost their intervening partitions, and are usually marked with dots, pits, rings, or spirals by internal deposition of secondary membranes; a duct..

Volution :: Volution (n.) A spiral turn or wreath.

Trachelipoda :: Trachelipoda (n.pl.) An extensive artificial group of gastropods comprising all those which have a spiral shell and the foot attached to the base of the neck.

Spiral :: Spiral (a.) A plane curve, not reentrant, described by a point, called the generatrix, moving along a straight line according to a mathematical law, while the line is revolving about a fixed point called the pole. Cf. Helix..

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

Sasin :: Sasin (n.) The Indian antelope (Antilope bezoartica, / cervicapra), noted for its beauty and swiftness. It has long, spiral, divergent horns..

Twining :: Twining (a.) The act of one who, or that which, twines; (Bot.) the act of climbing spirally..

Curlycue :: Curlycue (n.) Some thing curled or spiral,, as a flourish made with a pen on paper, or with skates on the ice; a trick; a frolicsome caper..

Antidromous :: Antidromous (a.) Changing the direction in the spiral sequence of leaves on a stem.

Plagihedral :: Plagihedral (a.) Having an oblique spiral arrangement of planes, as levogyrate and dextrogyrate crystals..

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