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.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

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]
Farlex Partner Medical Dictionary © Farlex 2012

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]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

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]
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
Flying on instruments and the moving map only, fly over the landing threshold as shown on the map, start your spiral down with the 30-degree bank, and see how fast you're coming down in the current condition.
The Pops and Junkies collaborated from the start, muscling up the strings-ready "Brand New World" and "Spiral Down." The orchestra then pulled back to let the band's personality take hold of Symphony Hall, and the Junkies did just that with lush and languid renditions of "Sun Comes Up, It's Tuesday Morning" and "'Cause Cheap Is How I Feel." It was a chance for Cowboy Junkies to put its music up against the legacies of Leonard Bernstein's "West Side" music and the riveting outings by young Brenner and Muhly, in the process proving that quality music comes in many different containers.
``I tried to pull back but my blades chopped the tail off and once you lose tail rotor control you spiral down.
The North London side, in shock after the departure of manager Tony Cottee on Friday, halted their spiral down the table while denting Southend's hopes of climbing back into a play-off position.
Without it we will spiral down into anarchy and chaos." Prof Fells said politicians had ignored the problem of dwindling electricity supplies for decades and now the problem was a greater threat than global warming.
The company had earlier proposed opening up a new access to the mine which would spiral down, allowing miners to get first to the White Rock area and later to the deeper, higher grade Engine Zone and other resource zones.
As he did the wind came up and it collapsed his ballast and led him to spiral down.