/ Dictionary / Index O olfaction: Meaning and Definition of Find definitions for: ol•fac•tion Pronunciation: (ol-fak'shun, ōl-), [key] — n. the act of smelling. the sense of smell. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: olfaction (Thesaurus) oleyl alcohol olfactometer Related Content Daily Word Quiz: digression Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language