sulcus

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Related to nasolabial sulcus: mentolabial sulcus

sul·cus

 (sŭl′kəs)
n. pl. sul·ci (-kī, -sī)
1. A deep, narrow furrow or groove, as in an organ or tissue.
2. Any of the narrow fissures separating adjacent convolutions of the brain.

[Latin.]

sul′cal adj.

sulcus

(ˈsʌlkəs)
n, pl -ci (-saɪ)
1. a linear groove, furrow, or slight depression
2. (Anatomy) any of the narrow grooves on the surface of the brain that mark the cerebral convolutions. Compare fissure
[C17: from Latin]

sul•cus

(ˈsʌl kəs)

n., pl. -ci (-sī).
Anat. a groove or fissure, esp. a fissure between two convolutions of the brain.
[1655–65; Latin: furrow]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.sulcus - (anatomy) any of the narrow grooves in an organ or tissue especially those that mark the convolutions on the surface of the brain
fissure - (anatomy) a long narrow slit or groove that divides an organ into lobes
central sulcus, fissure of Rolando, Rolando's fissure, sulcus centralis - a brain fissure extending upward on the lateral surface of both hemispheres; separates the frontal and parietal lobes
fissure of Sylvius, lateral cerebral sulcus, sulcus lateralis cerebri, Sylvian fissure - the deepest and most prominent of the cortical fissures; separates the frontal lobes and temporal lobes in both hemispheres
parieto-occipital fissure, parieto-occipital sulcus - a sulcus near the posterior end of each hemisphere that separates the parietal lobes and the occipital lobes in both hemispheres
calcarine fissure, calcarine sulcus - a sulcus in the mesial surface of the occipital lobe of the cerebrum
anatomy, general anatomy - the branch of morphology that deals with the structure of animals
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