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spiculum Twit Definition of spiculum Share Definition of spiculum on Facebook Digg:Definition of spiculum! stumble Definition of spiculum Bookmark Definition of spiculum on Delicious submit Definition of spiculum to reddit Bookmark Definition of spiculum
noun (spicula)
  1. A sharp, pointed crystal, especially of ice.
  2. (zoology) A sharp, needle-like structure, especially those making up the skeleton of a sponge.
  3. (astronomy) A small radial emission of gas seen in the chromosphere and corona of the sun.
Etymology: Modern Latin, an irregular diminutive of Latin spica "spike".

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