/ Dictionary / Index O olfactory nerve: Meaning and Definition of Find definitions for: olfac'tory nerve" Pronunciation: [key] — Anat. Anat. either one of the first pair of cranial nerves, consisting of sensory fibers that conduct to the brain the impulses from the mucous membranes of the nose. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. olfactory lobe OLG Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language