/ Dictionary / Index C central sulcus: Meaning and Definition of Find definitions for: cen'tral sul'cus Pronunciation: [key] — Anat. Anat. the sulcus separating the frontal and parietal lobes of the cerebrum. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Central Sudanic central tendency Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language