especially: a shallow furrow on the surface of the brain separating adjacent convolutions
Examples of sulcus in a Sentence
Recent Examples on the WebSimilarly, the region responsible for primary motor sensor, the central sulcus, also showed increased activity that lingered.—Emilie Le Beau Lucchesi, Discover Magazine, 8 Feb. 2022 Researchers have tracked dyscalculia to a fold in the back of the brain known as the intraparietal sulcus, or IPS.—Carlin Flora, Discover Magazine, 19 Nov. 2013 Neuroscientists have found that when people do mathematical intuition problems, a strip of neurons near the top of the brain, surrounding a fold called the intraparietal sulcus, consistently becomes active.—Carl Zimmer, Discover Magazine, 19 Aug. 2014 Indeed, one part of the brain – the superior temporal sulcus – is involved in processing the direction of gazes.—Ed Yong, Discover Magazine, 30 Oct. 2012 In those young and older, the under-eye hollows and pre-jowl sulcus — the indents on either side of the chin — tend to suffer a similar fate.—Jolene Edgar, refinery29.com, 6 Oct. 2021
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'sulcus.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Word History
Etymology
Latin; akin to Old English sulh plow, Greek holkos furrow, helkein to pull
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