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sulcus

 [suhl-kuhs]  

sul·cus

   [suhl-kuhs]
noun, plural sul·ci  [-sahy] .
1.
a furrow or groove.
2.
Anatomy. a groove or fissure, especially a fissure between two convolutions of the brain.
Origin:
1655–65; Latin: furrow

Related forms
sub·sul·cus, noun, plural sub·sul·ci.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Sulcus is always a great word to know.
So is fovea. Does it mean:
one of the spaces covered by membrane between the bones of the fetal or young skull
small pit or depression in a bone or other structure
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Collins
World English Dictionary
sulcus (ˈsʌlkəs)
 
—n , pl -ci
1.  a linear groove, furrow, or slight depression
2.  Compare fissure any of the narrow grooves on the surface of the brain that mark the cerebral convolutions
 
[C17: from Latin]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Medical Dictionary

sulcus sul·cus (sŭl'kəs)
n. pl. sul·ci (-kī, -sī)

  1. Any of the grooves on the brain surface, bounding the gyri; a fissure.

  2. A long narrow groove or depression, as in an organ or a tissue.

sul'cal adj.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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