sulcus

[ suhl-kuhs ]

noun

, plural sul·ci [suhl, -sahy].

1. a furrow or groove.
2. Anatomy. a groove or fissure, especially a fissure between two convolutions of the brain.

sulcus

/ ˈsʌlkəs /

noun

1. a linear groove, furrow, or slight depression
2. any of the narrow grooves on the surface of the brain that mark the cerebral convolutions Compare fissure

Other Words From

• sub·sulcus noun plural subsulci

Word History and Origins

Origin of sulcus¹

1655–65; Latin: furrow

Word History and Origins

Origin of sulcus¹

C17: from Latin

Example Sentences

"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

One sticking point for several was whether it was possible to make any accurate judgement about brain structure based on the landmarks of the coronal suture and precentral sulcus.

From Science Magazine

He needed a sample from the superior frontal sulcus — but how big?

From New York Times

For novices, this region — which is called the occipitotemporal sulcus and often processes animal images — didn’t show a preference for pokémon.

From The Verge

Three of the Space Station astronauts in Roberts’s study had swelling of the optic disk, and all three of them had narrowing of the central sulcus.

From Scientific American