spicule

  1. Noun.  A sharp, needle-like piece.
  2. Noun.  (biology) Any of many needle-like crystalline structures that provide skeletal support in marine invertebrates like sponges.
  3. Noun.  (astronomy) A jet of matter ejected from the photosphere of the sun.
  4. Noun.  A small spike of flowers.

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This entry was last updated on RefTopia from its source on 3/20/2012.