Dictionary.com

sulcus

[ suhl-kuhs ]
/ ˈsʌl kəs /
Save This Word!

noun, plural sul·ci [suhl-sahy]. /ˈsʌl saɪ/.
a furrow or groove.
Anatomy. a groove or fissure, especially a fissure between two convolutions of the brain.
QUIZ
GOOSES. GEESES. I WANT THIS QUIZ ON PLURAL NOUNS!
Test how much you really know about regular and irregular plural nouns with this quiz.
Question 1 of 9
Which of the following nouns has an irregular plural form?

Origin of sulcus

1655–65; Latin: furrow

OTHER WORDS FROM sulcus

sub·sul·cus, noun, plural sub·sul·ci.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use sulcus in a sentence

British Dictionary definitions for sulcus

sulcus
/ (ˈsʌlkəs) /

noun plural -ci (-saɪ)
a linear groove, furrow, or slight depression
any of the narrow grooves on the surface of the brain that mark the cerebral convolutionsCompare fissure

Word Origin for sulcus

C17: from Latin
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

Medical definitions for sulcus

sulcus
[ sŭlkəs ]

n. pl. sul•ci (-kī, -sī)
Any of the grooves on the brain surface, bounding the gyri; a fissure.
A long narrow groove or depression, as in an organ or a tissue.

Other words from sulcus

sulcal adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
FEEDBACK