/ Dictionary / Index C central nervous system: Meaning and Definition of Find definitions for: cen'tral nerv'ous sys"tem Pronunciation: [key] the part of the nervous system comprising the brain and spinal cord. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. central moment Central Park Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language