Definition of spiral

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

Lern More About Spiral

Antidromous :: Antidromous (a.) Changing the direction in the spiral sequence of leaves on a stem.
Sasin :: Sasin (n.) The Indian antelope (Antilope bezoartica, / cervicapra), noted for its beauty and swiftness. It has long, spiral, divergent horns..
Plagihedral :: Plagihedral (a.) Having an oblique spiral arrangement of planes, as levogyrate and dextrogyrate crystals..
Worm :: Worm (n.) To wind rope, yarn, or other material, spirally round, between the strands of, as a cable; to wind with spun yarn, as a small rope..
Scroll :: Scroll (n.) An ornament formed of undulations giving off spirals or sprays, usually suggestive of plant form. Roman architectural ornament is largely of some scroll pattern..
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..
Scalaria :: Scalaria (n.) Any one of numerous species of marine gastropods of the genus Scalaria, or family Scalaridae, having elongated spiral turreted shells, with rounded whorls, usually crossed by ribs or varices. The color is generally white or pale. Called also ladder shell, and wentletrap. See Ptenoglossa, and Wentletrap..
Stentor :: Stentor (n.) Any species of ciliated Infusoria belonging to the genus Stentor and allied genera, common in fresh water. The stentors have a bell-shaped, or cornucopia-like, body with a circle of cilia around the spiral terminal disk. See Illust. under Heterotricha..
Turbinated :: Turbinated (a.) Spiral with the whorls decreasing rapidly from a large base to a pointed apex; -- said of certain shells.
Fauces :: Fauces (n.pl.) That portion of the interior of a spiral shell which can be seen by looking into the aperture.
Involuted :: Involuted (a.) Rolled inward spirally.
Gyratory :: Gyratory (a.) Moving in a circle, or spirally; revolving; whirling around..
Spiry :: Spirulate (n.) Having the color spots, or structural parts, arranged spirally..
Coil :: Coil (v. t.) To wind cylindrically or spirally; as, to coil a rope when not in use; the snake coiled itself before springing..
Ladies'' Tresses :: Ladies' tresses () A name given to several species of the orchidaceous genus Spiranthes, in which the white flowers are set in spirals about a slender axis and remotely resemble braided hair..
Peristome :: Peristome (n.) The lip, or edge of the aperture, of a spiral shell..
Screw :: Screw (n.) A cylinder, or a cylindrical perforation, having a continuous rib, called the thread, winding round it spirally at a constant inclination, so as to leave a continuous spiral groove between one turn and the next, -- used chiefly for producing, when revolved, motion or pressure in the direction of its axis, by the sliding of the threads of the cylinder in the grooves between the threads of the perforation adapted to it, the former being distinguished as the external, or male screw, or,
Ring :: Ring (v. i.) To rise in the air spirally.
Rifle :: Rifle (n.) A gun, the inside of whose barrel is grooved with spiral channels, thus giving the ball a rotary motion and insuring greater accuracy of fire. As a military firearm it has superseded the musket..
Rifle :: Rifle (v. t.) To grove; to channel; especially, to groove internally with spiral channels; as, to rifle a gun barrel or a cannon..
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