spiral

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spiral

 [spi´ral]
1. winding like the thread of a screw; called also helical.
2. a winding structure; see also coil and helix.
Curschmann's s's coiled fibrils of mucin sometimes found in the sputum of patients with asthma. See also Laënnec's pearls.

spi·ral

(spī'răl),
1. Coiled; winding around a center like a watch spring; winding and ascending like a wire spring.
2. A structure in the shape of a coil.
[Mediev. L. spiralis, fr. G. speira, a coil]

spiral

/spi·ral/ (spi´ral)
1. helical; winding like the thread of a screw.
2. helix; a winding structure.

Curschmann's spirals  coiled mucinous fibrils sometimes found in the sputum in bronchial asthma.

spi·ral

(spī'răl)
1. Coiled; winding around a center like a watch spring; winding and ascending like a wire spring.
2. A structure in the shape of a coil.
[Mediev. L. spiralis, fr. G. speira, a coil]

spi·ral

(spī'răl)
1. Coiled; winding around a center like a watch spring; winding and ascending like a wire spring.
2. Structure in shape of a coil.
[Mediev. L. spiralis, fr. G. speira, a coil]

spiral

1. winding like the thread of a screw.
2. a structure curving around a central point or axis.

Curschmann's s's
spiral organ of Corti
see organ of Corti.
spiral penile deviation
a defect in bulls. See corkscrew penis.
spiral septum
the arterial partition between aorta and pulmonary trunk, formed by the fusion of the truncal, bulbar and aorticopulmonary septa of the great vessels attached to the embryonic heart.
spiral worm
Dispharynx nasuta. See synhimantusspiralis.
References in periodicals archive ?
Thin conical shell, number of whorls 4, umbilicus imperforate, shell light brownish in colour, dextral, thin and somewhat squarely ovate, body whorl abruptly enlarged, spire cone shaped, aperture large, very broad and ear shaped, shell sculpture spirally striated, apex sharp and pointed.
Calvo: Hannibal Pipes SA was established in 2009 with the target of becoming the first state-of-the-art spirally welded steel pipe mill in the South of Spain serving the local market as well as the international one with particular respect to Mediterranean countries, North Africa and Latin America.
Male flowers in Uncinia rubra are spirally placed on the distal part of the spike axis, each subtended by a glume-like bract (Fig.
7 mm wide, cuneate at base, acute at apex; scales somewhat spreading, loosely spirally arranged, with 24 sterile scales at the base of the spikelet (excluding the prophyll) and 8-25 fertile scales; fertile scales 1.
Data from multiple sources--class observations, teacher and student interviews, and documents--were constantly compared, and developmentally and spirally analyzed.
Hickenlooper never thematically overcomes the spirally downward arc such stories bring, but he does offer a fascinating look at a heady time.
Cincinnati Extrusion has entered into a partnership with the German manufacturer Bauku to supply extrusion lines for spirally wound pipes.
There are scored lines running spirally around the body of the mug which have caught the extra-fluxed coloured patches of glaze as they moved downwards by gravity during the firing.
Ascospores brownish, ellipsoidal, 8-12 x 4-5 pm, with spirally arranged ridges and some cracks which distort the ridges in mature ascospores.
The Vertigo label, with its spirally graphics, gave us some big names such as Black Sabbath and Status Quo.
MITRID--of the Mitridae family of spirally sculptured seashells.
Patented spirally grooved water jacket in grinding chamber for high cooling efficiency.