sulcus
Americannoun
plural
sulci-
a furrow or groove.
-
Anatomy. a groove or fissure, especially a fissure between two convolutions of the brain.
noun
-
a linear groove, furrow, or slight depression
-
any of the narrow grooves on the surface of the brain that mark the cerebral convolutions Compare fissure
Other Word Forms
- subsulcus noun
Etymology
Origin of sulcus
1655–65; Latin: furrow
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
These patterns were based on sulcus depth and cortical thickness, which describe the folding of the brain surface and the thickness of the brain's outer layer.
From Science Daily • Jan. 4, 2026
"You can think about the intraparietal sulcus as having two knobs on a radio dial: one that adjusts focusing and one that adjusts filtering," Ritz said.
From Science Daily • Mar. 8, 2024
The cortex is made up of two hemispheres—right and left—which are separated by a large sulcus.
From Textbooks • Jun. 9, 2022
They are arranged in a circular-shaped row just in front of the sulcus terminalis of the tongue.
From Textbooks • Jan. 1, 2015
His ears are nearly a foot in length, asinine, broad, and slouching; his eyes are small; and his muzzle square, with a deep sulcus in the middle, which gives it the appearance of being bifid.
From The Hunters' Feast Conversations Around the Camp Fire by Reid, Mayne
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
