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gyrus
gyrus [ jrəss ] (plural gyri [ jrī ])


noun 
Definition:
 
ridge of brain cortex: a rounded ridge on the outer layer of the brain
[Mid-19th century. Via Latin, 'circle' < Greek guros 'ring, circle']
Encarta® World English Dictionary [World English Edition] © & (P)2008 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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