gyri

[jahy-rahy]
noun
plural of gyrus.
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gyrus

[jahy-ruhs]
noun, plural gyri [jahy-rahy] . Anatomy.
a convolution, especially of the brain.

Origin:
1835–45; < Latin gȳrus; see gyre

subgyrus, noun, plural subgyri.
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Collins
World English Dictionary
gyrus (ˈdʒaɪrəs)
 
n , pl gyri
another name for convolution
 
[C19: from Latin; see gyre]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

gyrus gy·rus (jī'rəs)
n. pl. gy·ri (-rī')
Any of the prominent, rounded, elevated convolutions 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.
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American Heritage
Science Dictionary
gyrus   (jī'rəs)  Pronunciation Key 
Plural gyri
A rounded ridge, as on the surfaces of the cerebral hemispheres.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
Clear cerebrospinal fluid surrounds the brain which has unremarkable gyri and sulci.
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