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 ?
As the US economy has spiralled downward, Kroger has been faced with keeping costs under control while offering more price discounts, a strategy it undertook well.
The 22-year-old made three substitute appearances at the last World Cup - but for two years was in the wilderness as his fortunes for club and country spiralled downward.