Noun: sulcus
| Singular | sulcus |
| Plural | sulci |
Sample Sentences
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The sulci and gyri are the grooves and ridges, respectively.
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The Union’s soft latex-polymer roof is cerebrally domed and a cloudy piamater pink except in spots where it’s eroded down to pasty gray, and everywhere textured, the bulging rooftop, with sulci and bulbous convolutions. [1996, David Foster Wallace, Infinite Jest […], Boston, Mass.; New York, N.Y.: Little, Brown and Company, →ISBN, page 186:]
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The largest sulcus, the longitudinal fissure, divides the brain into left and right hemispheres. [1999, Thomas C. Pritchard, Kevin D. Alloway, Medical Neuroscience, page 55:]
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Unlike most other sulci, the lateral sulcus is very deep. [2006, Inderbir Singh, Textbook of Human Neuroanatomy, 7th edition, page 72:]
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The large surface area of the human cerebral cortex results in a pattern of gyri and sulci. [2014, John Kiernan, Raj Rajakumar, Barr's The Human Nervous System: An Anatomical Viewpoint, 10th edition, page 213:]
Nouns inflected like sulcus
ophiopluteus,
faveolus,
saccus,
lampadarius,
scarus,
scapus,
solvus,
soleus,
socius,
acrorhagus,
red nucleus,
xystus,
phaseolus,
jelly fungus,
rust fungus,
computus,
paraflocculus,
sibilant rhonchus,
chalimus,
stratigotus, etc. (List truncated at 20 nouns)
Etymology
Borrowed from Latin sulcus (“a furrow made by a plow”). Doublet of sullow ("plough"). See: Latin Nouns '
sulcus'.