[jahy-ruh s] /ˈdʒaɪ rəs/

noun, plural gyri
[jahy-rahy] /ˈdʒaɪ raɪ/ (Show IPA). Anatomy.
a convolution, especially of the brain.
noun (pl) gyri (ˈdʒaɪraɪ)
another name for convolution (sense 3)

convolution between grooves, 1842, from Latin gyrus “circle, circuit, career,” from Greek gyros “ring, circle” (see gyre).

gyrus gy·rus (jī’rəs)
n. pl. gy·ri (-rī’)
Any of the prominent, rounded, elevated convolutions on the surfaces of the cerebral hemispheres.
Plural gyri
A rounded ridge, as on the surfaces of the cerebral hemispheres.


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