Fissure of Sylvius Meaning, Definition & Usage

  1. noun the deepest and most prominent of the cortical fissures; separates the frontal lobes and temporal lobes in both hemispheres
    sulcus lateralis cerebri; lateral cerebral sulcus; Sylvian fissure.

WordNet

Definitions
  1. (Anat.), a deep cerebral fissure separating the frontal from the temporal lobe. See Illust. under Brain.

Webster 1913