Sulcus
6 lettersnounrareUpdated June 2026
Definition
A narrow groove or furrow in an organ or tissue, particularly the folds visible on the surface of the brain.
“The central sulcus divides the frontal and parietal lobes of the cerebral cortex.”
Pronunciation
Syllables
sul·cus
Related Words
Word Game Tips
🟩
Wordle
Ends in -US with the unusual SUL- opener, C before US is a distinctive anatomical pattern
🔤
Scrabble
Worth 8 points, anatomical terms with the -US ending are often valid in Scrabble
Words Related to Sulcus
Words one letter different
Change a single letter of “sulcus” to make these 6-letter words — useful for Wordle and crossword clues.
Explore Similar Words
Try These Tools
Dictionary References
Look up sulcus in an authoritative dictionary for full definitions, pronunciation, and etymology.
Ready to test your word skills?
Download Word Challenge for unlimited word puzzles, a fresh Daily Challenge, and head-to-head multiplayer. Guess the hidden word in six tries or fewer!