gyrus

[ jahy-ruh s ]
/ ˈdʒaɪ rəs /

noun, plural gy·ri [jahy-rahy] /ˈdʒaɪ raɪ/. Anatomy.

a convolution, especially of the brain.

Origin of gyrus

1835–45; < Latin gȳrus; see gyre

Related forms

sub·gy·rus, noun, plural sub·gy·ri.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for gyrus

British Dictionary definitions for gyrus

gyrus

/ (ˈdʒaɪrəs) /

noun plural gyri (ˈdʒaɪraɪ)

another name for convolution (def. 3)

Word Origin for gyrus

C19: from Latin; see gyre
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for gyrus

gyrus

[ jīrəs ]

n. pl. gy•ri (-rī′)

A rounded ridge, as on the surfaces of the cerebral hemispheres.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for gyrus

gyrus

[ jīrəs ]

Plural gyri

A rounded ridge, as on the surfaces of the cerebral hemispheres.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.