spicule


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Related to spicule: spongin

spicule

 [spik´ūl]
a sharp, needle-like body or spike.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

spic·ule

(spik'yūl),
1. A small needle-shaped body.
2. Accessory reproductive structure in male nematodes; useful in identification of species.
[L. spiculum, dim. of spica, or spicum, a point]
Farlex Partner Medical Dictionary © Farlex 2012

spicule

(spĭk′yo͞ol) also

spicula

(-yə-lə)
n. pl. spic·ules also spic·ulae (-yə-lē)
A small needlelike structure or part, such as one of the silicate or calcium carbonate processes supporting the soft tissue of certain invertebrates, especially sponges.

spic′u·lar (-yə-lər), spic′u·late (-yə-lĭt, -lāt′) adj.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

spic·ule

(spik'yūl)
A small, needle-shaped body.
[L. spiculum, dim. of spica, or spicum, a point]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

spicule

  1. a small spiked structure in male nematode worms that assists in copulation.
  2. a slender rod of calcium carbonate found in sponges, that supports the soft wall.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

spic·ule

(spik'yūl)
A small, needle-shaped body.
[L. spiculum, dim. of spica, or spicum, a point]
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
Fifty-three of each type of spicule were measured (Fig.
Thus, it is conceivable that this rash represented the early papular stages of a trichodysplasia spinulosa lesion that did not progress to the characteristic spicules.
It is important to note that the length of the left spicule is similar in the 6 known species of Dipetalonema (Table 1), however there are differences in the lengths of the different portions of the spicule.
L: total body length; MBW: maximum body width; ABW: anal-body width; VBW: vulval-body width; EP: distance from anterior end to excretory pore; ES: distance from anterior end to base of esophagus; GuL: gubernaculum length; GuW: gubernaculum width; NR: nerve-ring position; STL: stoma length; STW: stoma width; SpL: spicule length; SpW: spicule width; TL: tail length; TRL: testis-reflection length; D: EP-ES; E: EP-TL; GS: GuL-SpL; V%: (L-length to vagina) x 100; a: L-MBW; b: L-ES; c: L-TL; d: EP-ES; e: EP-TL.
Characterization of cytoplasmatic extensions/gripping spicules indicated that they appeared to respond directly to increasing [alpha]-solanine concentration.
Furthermore, the characteristics identified in the male parasite found in the present case differ from others previously documented: both spicules had a blunt end, whereas in other cases one or both spicules had sharp or barbed ends.
(1998b) attribute the absence of peat and spicule deposits at the bottom of Lake in Maraca to a lower input of silica to the lake water because of the surrounding forestall covering of the area.
On careful examination, some of these crystals were found to be associated with nail-head spicules (again, see Figure 22), while others formed isolated clusters of elongated inclusions.
In the laboratory, sections were dried and placed in a heated, concentrated sulfuric acid bath (98%) to isolate the siliceous spicules similarly to Poirrier (1972).
Length of author's specimen spicule is larger than others.
mastacembeli in vulva position; length of left spicule; number of anal papillae; and the males with caudal alae respectively.
As discussed briefly in [section]3.4, the chromosphere is filled with spicules [337] which seem to extend as disoriented hair beyond the surface of the Sun.