gy·rus

(jī′rəs)

n. pl. gy·ri (-rī′)

A rounded ridge, as on the surfaces of the cerebral hemispheres.

[Latin gȳrus, circle; see gyre.]

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

gyrus

(ˈdʒaɪrəs)

n, pl gyri (ˈdʒaɪraɪ)

another name for convolution³

[C19: from Latin; see gyre]

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

gy•rus

(ˈdʒaɪ rəs)

n., pl. gy•ri (ˈdʒaɪ raɪ)

a convoluted fold of the brain.

[1835–45; < Latin gȳrus; see gyre]

ThesaurusAntonymsRelated WordsSynonymsLegend:

Noun

gyrus - a convex fold or elevation in the surface of the brain

convolution

anatomical structure, bodily structure, body structure, complex body part, structure - a particular complex anatomical part of a living thing; "he has good bone structure"

frontal gyrus - any of the convolutions of the outer surface of the frontal lobe of the cerebrum

temporal gyrus - any of the convolutions of the outer surface of the temporal lobe of the cerebrum

parietal gyrus - any of the convolutions of the outer surface of the parietal lobe of the cerebrum

occipital gyrus - any of the convolutions of the outer surface of the occipital lobe of the cerebrum

cerebrum - anterior portion of the brain consisting of two hemispheres; dominant part of the brain in humans

central gyrus - either of two gyri on either side of the central sulcus

Translations

gy·rus

n. L. circunvolución, porción elevada de la corteza cerebral;

Broca's ___ → ___ de Broca, tercera, frontal inferior;

frontal, superior ___ → ___ frontal superior;

inferior, lateral occipital ___ → ___ occipital inferior lateral;

superior occipital ___ → ___ occipital superior.