spic·ule (sp k y l) also spic·u·la (-y -l)n. pl. spic·ules also spic·u·lae (-y -l ) 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. [Latin sp  culum; see spiculum.]spic u·lar (-y-lr), spicu·late (-y-lt, -l t ) adj. |
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