helicoid

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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.

hel·i·coid

(hel'i-koyd),
Resembling a helix.
Synonym(s): helical (2)
[G. helix, a coil, + eidos, resemblance]

hel·i·coid

(hel'i-koyd)
Resembling a helix.
Synonym(s): helical (2) .
[G. helix, a coil, + eidos, resemblance]

helicoid

coiled; spiral.