granule

  1. Noun.  A tiny grain, a small particle.
  2. Noun.  (biology) A small structure in a cell.
  3. Noun.  (geology) A fragment of rock etc., larger than a sand grain and smaller than a pebble.
  4. Noun.  (astronomy) a small mark in the photosphere of the sun caused by convection currents. See also Wikipedia:Granule (solar physics).

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