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]

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]
References in periodicals archive ?
As the gas plunges toward the black hole, like water spiraling down a drain, it emits a final torrent of X rays.
The profit warning sent Whirlpool's shares spiraling down to $34 -- the lowest it's been in about eight years.
After disappointing financial results for fourth quarter 1999 sent share prices spiraling down to a 52-week low of $23.31, the company announced Perrin's retirement and named Jung--then president and COO--to the CEO chair.
According to his notes, on the second night he was able to glimpse the space ship spiraling down from the sky.