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 ?
Instead, right there on Broadway and Bleecker at 4 in the morning, I spiraled down into severe disco withdrawal, unable to accept what I already knew to be the truth: Saturday night would never be Saturday night again,
A witness said he saw a rotor blade break off the helicopter before it spiraled down into the hills a mile south of Littlerock, coming to rest on its side in a ravine east of Littlerock Dam.
He was mostly interested in squeezing every dollar he could from the company's coffers until the company spiraled down the slippery slope to bankruptcy.