Meaning of spicule

spic•ule

Pronunciation: (spik'yl), [key]
— n.
  1. a small or minute, slender, sharp-pointed body or part; a small, needlelike crystal, process, or the like.
  2. one of the small, hard, calcareous or siliceous bodies that serve as the skeletal elements of various marine and freshwater invertebrates.
  3. a jet of gas several hundred miles in diameter rising from the sun's surface to heights of 3000 to 6000 miles (4800 to 9600 km).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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