sulcus
a furrow or groove.
Anatomy. a groove or fissure, especially a fissure between two convolutions of the brain.
Origin of sulcus
1Other words from sulcus
- sub·sul·cus, noun, plural sub·sul·ci.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use sulcus in a sentence
This gray substance lies in folds or convolutions, the furrows or sulci, dipping deeply into the interior of the brain.
How to Become Rich | William WindsorTransverse sulci: the transverse grooves of pronotum in many Orthoptera.
Explanation of Terms Used in Entomology | John. B. SmithThe lymph was purely basal, solely on the arachnoid, not in the fissures or sulci.
A History of Epidemics in Britain, Volume II (of 2) | Charles CreightonVery strongly and deeply impressed sulci præcentrales seem to serve as substitutes for them.
The Mind of the Child, Part II | W. PreyerGyrus, jī′rus, n. one of the rounded edges into which the surface of the cerebral hemisphere is divided by the fissures or sulci.
British Dictionary definitions for sulcus
/ (ˈsʌlkəs) /
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
Origin of sulcus
1Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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