sulcus sulculus • sulcus centralis · · · Info · Definitions · Characters · · sulcus · · Text Latin · · Script 6 · · Length 2 · · Syllables Definitions · · · (noun) (anatomy) any of the narrow grooves in an organ or tissue especially those that mark the convolutions on the surface of the brain. · · Noun Definition 1 Characters · · c latin small letter c U+0063 l latin small letter l U+006C s latin small letter s U+0073 u latin small letter u U+0075