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Definition of: spicule
(spik′y
l) noun
1. A small, slender, sharp–pointed body; a spikelet.
2. Zool. One of the small, needlelike, calcareous growths supporting the soft tissues of certain invertebrates, as sponges, radiolarians, etc. Also spic·u·la (spik′yə·lə). [<L spiculum, dim. of spicum point, spike]
—spic′u·lar, spic′u·late (-lāt, -lit) adjective
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