/ Dictionary / Index N nerve impulse: Meaning and Definition of Find definitions for: nerve' im"pulse Pronunciation: [key] — Physiol. Physiol. a progressive wave of electric and chemical activity along a nerve fiber that stimulates or inhibits the action of a muscle, gland, or other nerve cell. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. nerve growth factor nerveless Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language