medulla

  1. Noun.  The soft inner part of something, especially the pith of a fruit.
  2. Noun.  (anatomy) The inner substance of various organs and structures, especially the marrow of bones.
  3. Noun.  (anatomy) The medulla oblongata.
  4. Noun.  (botany) The internal tissue of a plant.

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