Medullae

2 definitions found

From WordNet (r) 2.0 [wn]:

  medulla
       n 1: a white fatty substance that forms a medullary sheath around
            the axis cylinder of some nerve fibers [syn: {myelin}, {myeline}]
       2: lower or hindmost part of the brain; continuous with spinal
          cord; (`bulb' is an old term for medulla oblongata); "the
          medulla oblongata is the most vital part of the brain


          because it contains centers controlling breathing and
          heart functioning" [syn: {medulla oblongata}, {bulb}]
       3: the inner part of an organ or structure in plant or animal
          [ant: {cortex}]
       [also: {medullae} (pl)]

From WordNet (r) 2.0 [wn]:

  medullae
       See {medulla}