fissure of Rolando

fissure of Rolando
    n 1: a brain fissure extending upward on the lateral surface of
         both hemispheres; separates the frontal and parietal lobes
         [syn: {fissure of Rolando}, {Rolando's fissure}, {central
         sulcus}, {sulcus centralis}]
    

Fissure \Fis"sure\, n. [L. fissura, fr. findere, fissum, to
   cleave, split; akin to E. bite: cf. F. fissure.]
   A narrow opening, made by the parting of any substance; a
   cleft; as, the fissure of a rock.
   [1913 Webster]

   {Cerebral fissures} (Anat.), the furrows or clefts by which
      the surface of the cerebrum is divided; esp., the furrows
      first formed by the infolding of the whole wall of the
      cerebrum.

   {Fissure needle} (Surg.), a spiral needle for catching
      together the gaping lips of wounds. --Knight.

   {Fissure of rolando} (Anat.), the furrow separating the
      frontal from the parietal lobe in the cerebrum.

   {Fissure of Sylvius} (Anat.), a deep cerebral fissure
      separating the frontal from the temporal lobe. See Illust.
      under {Brain}.

   {Fissure vein} (Mining), a crack in the earth's surface
      filled with mineral matter. --Raymond.
      [1913 Webster]