from The American Heritage® Dictionary of the English Language, 4th Edition
- n. 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.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A sharp, needle-like piece
- n. Any of many needle-like crystalline structures that provide skeletal support in marine invertebrates like sponges
- n. A jet of matter ejected from the photosphere of the sun
- n. A small spike of flowers
from the GNU version of the Collaborative International Dictionary of English
- n. A minute, slender granule, or point.
- n. Same as Spicula.
- n. Any small calcareous or siliceous body found in the tissues of various invertebrate animals, especially in sponges and in most Alcyonaria.
from The Century Dictionary and Cyclopedia
- n. A fine-pointed body resembling a needle: as, ice -spicules.
- n. In botany:
- n. A spikelet.
- n. One of the small projections or points on the basidia of hymenomycetous fungi which bear the spores. There are usually four to each basidium. See sterigma.
- n. In zoology, a hard, sharp body like a little spike, straight or curved, rod-like, or branched, or diversiform; a spiculum; a sclere: variously applied, without special reference to size or Shape.
- n. In botany, the empty frustule of a diatom.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. small pointed structure serving as a skeletal element in various marine and freshwater invertebrates e.g. sponges and corals
But now, as he threaded his way down, that flicker of light was the faint spicule of a star that burned with the hot roar of a nova.
The sea urchin larval spicule is a model system for biominerals, and the first one in which the amorphous calcium carbonate precursor was discovered in 1997 by the same Israeli group co-authoring the current PNAS paper.
Any spicule, any prominence, would long since have either fallen back into the chromosphere, or blown away entirely…but not this thing.
Any spicule, any prominence, would long since have either fallen back into the chromosphere, or blown away entirely… but not this thing.
The ice storm was no longer the gusting, swirling fog of that morning but a driving wall of stiletto-tipped spears, near-lethal in its ferocity, highspeed ice-spicule lances that would have skewered their way through the thickest cardboard or shattered in a second a glass held in your hand.
_ -- Early interference was only warranted by positive knowledge that some source of irritation or pressure could be removed; thus a bone spicule, or a bullet, or part of one, particularly portions of mantles.
The two strongest indications for operation are (1) signs pointing to the secondary implication of the nerve in a cicatrix, especially when these are of such a nature as to indicate local tension, fixation, or pressure; (2) the possibility of the irritation being the result of the presence of some foreign body, such as a bone spicule, or portions of a bullet mantle; in such cases the X rays will often give useful help.
In other cases secondary hæmorrhage was the result of perforation of the vessel by a sharp spicule of bone, but in the large majority sepsis and suppuration were the cause.
I will now give you recipes for some messes made with these fresh, crushed, spicule-stripped blossoms; however, dried blossoms were often used in these messes instead, and were just as good.
One of these giant cells may be found lying in a Howships foveola at the free end of each spicule.