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 ?
Fitz was manager when the club travelled to Stirling on the second last day of the season knowing defeat would send them spiralling down to the Second Division - and possibly out of existence.
In July last year, oil prices hit record peaks above $147 a barrel, before spiralling down to new lows in December due to weak energy demand arising from the effects of the world financial crisis.
Potty Pete's own problems with the law are well documented and his life certainly shows signs of spiralling down the gutter and beyond.
Chesterfield v Blackpool YOU have to admire the job Roy McFarland has done at Chesterfield, but they will surely start spiralling down the table at some stage and Blackpool could cause an upset at 4-1 today.
Firstly, we have to acknowledge that the schools have multiple pathologies - numbers spiralling down affecting morale, insecure staff, probably negative perceptions of the children in the minds of teachers and probably negative perceptions of each other in teachers' minds.
This has sparked speculation in markets about takeovers and insolvency among insurers, sending stock markets spiralling down further.
A long-serving Corrie worker said yesterday: "This has sent morale spiralling down further than it was.