/ Dictionary / Index N neuron: Meaning and Definition of Find definitions for: neu•ron Pronunciation: (noor'on, nyoor'-), [key] — n. a specialized, impulse-conducting cell that is the functional unit of the nervous system, consisting of the cell body and its processes, the axon and dendrites. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: neuron (Thesaurus) neuromuscular neuroophthalmology Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language