Definition of spiral

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Spiraeic (a.) Of, pertaining to, or derived from, the meadowsweet (Spiraea); formerly, designating an acid which is now called salicylic acid..

Lern More About Spiral

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.
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..
Volute :: Volute (n.) A spiral scroll which forms the chief feature of the Ionic capital, and which, on a much smaller scale, is a feature in the Corinthian and Composite capitals. See Illust. of Capital, also Helix, and Stale..
Conveyor :: Conveyor (n.) A contrivance for carrying objects from place to place; esp., one for conveying grain, coal, etc., -- as a spiral or screw turning in a pipe or trough, an endless belt with buckets, or a truck running along a rope..
Fusee :: Fusee (n.) The cone or conical wheel of a watch or clock, designed to equalize the power of the mainspring by having the chain from the barrel which contains the spring wind in a spiral groove on the surface of the cone in such a manner that the diameter of the cone at the point where the chain acts may correspond with the degree of tension of the spring..
Spirulate :: Spirula (n.) A genus of cephalopods having a multilocular, internal, siphunculated shell in the form of a flat spiral, the coils of which are not in contact..
Curl :: Curl (v. i.) To contract or bend into curls or ringlets, as hair; to grow in curls or spirals, as a vine; to be crinkled or contorted; to have a curly appearance; as, leaves lie curled on the ground..
Reversed :: Reversed (a.) Turned side for side, or end for end; changed to the contrary; specifically (Bot. & Zool.), sinistrorse or sinistral; as, a reversed, or sinistral, spiral or shell..
Littorina :: Littorina (n.) A genus of small pectinibranch mollusks, having thick spiral shells, abundant between tides on nearly all rocky seacoasts. They feed on seaweeds. The common periwinkle is a well-known example. See Periwinkle..
Valvata :: Valvata (n.) A genus of small spiral fresh-water gastropods having an operculum.
Suspiration :: Suspiral (n.) A spring of water passing under ground toward a cistern or conduit.
Pillworm :: Pillworm (n.) Any myriapod of the genus Iulus and allied genera which rolls up spirally; a galleyworm. See Illust. under Myriapod.
Snake :: Snake (v. t.) To wind round spirally, as a large rope with a smaller, or with cord, the small rope lying in the spaces between the strands of the large one; to worm..
Twist :: Twist (v. i.) To follow a helical or spiral course; to be in the form of a helix.
Turnip-shell :: Turnip-shell (n.) Any one of several large, thick, spiral marine shells belonging to Rapa and allied genera, somewhat turnip-shaped..
Cochlea :: Cochlea (n.) An appendage of the labyrinth of the internal ear, which is elongated and coiled into a spiral in mammals. See Ear..
Truncated :: Truncated (a.) Lacking the apex; -- said of certain spiral shells in which the apex naturally drops off.
Spite :: Spit curl () A little lock of hair, plastered in a spiral form on the temple or forehead with spittle, or other adhesive substance..
Tympanum :: Tympanum (n.) A drum-shaped wheel with spirally curved partitions by which water is raised to the axis when the wheel revolves with the lower part of the circumference submerged, -- used for raising water, as for irrigation..
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..
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