spicule


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Related to spicule: spongin

spicule

 [spik´ūl]
a sharp, needle-like body or spike.

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]

spicule

/spic·ule/ (spik´ūl) a sharp, needle-like body.

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.

spicule

[spik′yo̅o̅l]
Etymology: L, spiculum, point
a small sharp body with a needlelike point.

spic·ule

(spik'yūl)
A small, needle-shaped body.
[L. spiculum, dim. of spica, or spicum, a point]

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.

spicule

small spike at outer margin of the nail plate that can penetrate local nail wall (causing paronychia/ingrowing toenail) or cause local pain (i.e. a hang nail)

spic·ule

(spik'yūl)
A small, needle-shaped body.
[L. spiculum, dim. of spica, or spicum, a point]

spicule (spik´ūl),

n a small needle-shaped body.

spicule

1. a sharp, needle-like body or spike.
2. part of the male genital apparatus in nematodes; they engage the female genital orifice during copulation.
References in periodicals archive ?
Hardening of bio-silica in sponge spicules involves an aging process after its enzymatic polycondensation: evidence for an aquaporin-mediated water absorption.
The 'head' of the spicules in synthetic emeralds is usually composed of grains of synthetic phenakite, beryl, chrysoberyl, gold or other mineralizers (Choudhary and Golecha, 2007).
If spicules and chromospheric matter are genuinely the product of condensation reactions, then their mechanism of formation might shed great light into the emissive nature of this solar layer.
length of the spicule, gubernaculum, ventral sucker), allows the assignment of the specimens to P.
Location Sample Description (> 63 [mu]m) Box core 1, Labrador Sea * Few sand grains 62[degrees]01'07"N, 60[degrees]40'36"W * Few pebbles (1-2 mm) 825 m * Abundant sponge spicules * Rare diatoms * Intact sponges, echinoderms (brittle star) * Common nematode and polychaete worms * Amphipod crustaceans * Common bivalves and ostracods * Very abundant planktic foraminifera * Abundant calcareous and agglutinated benthic foraminifera Box core 4, Labrador Sea * Common fine to coarse sand 62[degrees]04'65"N, 58[degrees]57'16"W grains 2140 m * Common pebbles (0.
That rigid spicule penetrates soft surrounding tissue" and produces swelling, granulation tissue, and sometimes a secondary infection, said Dr.
Sponge identification is based largely on spicule morphology and care was taken to collect specimens bearing gemmules, as well as somatic tissue.
After photographing the specimen, small pieces of dermal and atrial surfaces were wholemounted in Canada balsam for light microscopy and digested in hot nitric acid for spicule cleaning.