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 ?
Usually, it's an excess of interiority, an obscene plenitude of psychi involution, that sends sensitive souls spiraling downward into the vortex of depression, madness, and rage.
Nor, for that matter, do they send stock prices spiraling downward, since the market usually continues to rise at least through the third year of an economic recovery.
Military spending on both sides of the Atlantic is spiraling downward.
Bello, who renounced his ties last week with the majority coalition in outrage over what he considered a cover-up of the Mamasapano incident, said the Aquino government had been spiraling downward in the aftermath of "Oplan Exodus.
But music purchases have been spiraling downward for some time, and concert touring is generally lucrative only for the biggest-name acts.
According to the Apple CEO, the strong fiscal second-quarter performance of the company can prove people wrong that the company has been spiraling downward.
The report also points out that the global price of 40W LED bulbs kept spiraling downward to US$11.
Their father abandoned them when they were small and their mother spends her days spiraling downward into the depths of alcoholism.
Speaking before about 800 people at an event sponsored by the World Affairs Council, General David Petraeus acknowledged that the situation in Afghanistan has been spiraling downward and is likely to get worse before it gets better.