sulcus

American  

[suhl-kuhs] / ˈsʌl kəs /

noun

PLURAL

sulci

1. a furrow or groove.

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

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sulcus British  

/ 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

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Other Word Forms

• subsulcus noun

Etymology

Origin of sulcus

1655–65; Latin: furrow

Compare meaning

How does sulcus compare to similar and commonly confused words? Explore the most common comparisons:

• gyrus vs. sulcus

Example Sentences

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

In the group of traumatised boys and girls, there was evidence that one area of the insula - the anterior circular sulcus - had changed in size and volume compared with the group with no trauma.

From BBC

Inside a major groove, or sulcus, that runs through the auditory cortex, there was a “hot spot of music selectivity,” he said, above and a little forward of the ear.

From New York Times