gyrus Meaning, Definition & Usage

  1. noun a convex fold or elevation in the surface of the brain
    convolution.

WordNet

Gy"rus noun
Etymology
L. See Gyre, n.
Wordforms
plural Gyri
Definitions
  1. A convoluted ridge between grooves; a convolution; as, the gyri of the brain; the gyri of brain coral. See Brain.

Webster 1913