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 ?
In stark contrast, Westchester County figures showed availabilities continuing to spiral downward, especially in the White Plains CBD.
Treasury--which argues that, in the absence of tight money, weak currencies will spiral downward even more rapidly, rendering it impossible for those who borrowed in foreign currency to repay their debts.
Hunger questioned how anyone can expect the independent retailer to stay in the DSS business if prices continue to spiral downward.
The loss of just one major retailer's business can cause a manufacturer's profits to plummet, its stock to spiral downward and investors to abandon ship.
Brady will get a little closer to Theresa but soon they will spiral downward together.
For some home buyers however, this served as a window of opportunity: "But while some people got stuck with a lemon - like an inflated mortgage that left them owing more than their home was actually worth - other people watched as the economy began to spiral downward and waited for the adjustments and incentives that would surely follow.
In an interview with a foreign new agency, Wong commented that ultrabook prices will start to spiral downward in the second quarter of 2012, when most of the devices will be built with Intel's newest processor, Ivy Bridge, which is developed specifically for ultrabook laptops and scheduled for launch early in the year.
The result will be a slow but steady spiral downward toward a government-run national health-care system.
The heroic interventions are likely to increase as populations of sturgeon species, precarious everywhere, continue to spiral downward.