Sulcus
/ˈsʌl.kəs/noun
A groove or furrow, especially in the brain or a muscle.
Did you know?In ancient times, the sulcus was believed to be a physical manifestation of the mind's depth, hinting at hidden thoughts and emotions.
Etymological Timeline
Proto-Indo-European
PIE
*sulkw-
“to be hollow or to make a hollow space.”
Latin
Latin
sulcus
“a groove, furrow, or trench, often used in a physical or metaphorical sense.”
Old French
Old French
sulc
“a furrow or channel, often used in agriculture.”
Middle English
Middle English
sulc
“a term for a groove in a physical or abstract sense.”
Modern English
English
sulcus
“a term primarily in anatomy describing a groove in the brain.”