Breadcrumb Home > Dictionary Cite Meaning of volatile oil Find definitions for: vol'atile oil" Pronunciation: [key] a distilled oil, esp. one obtained from plant tissue, as distinguished from glyceride oils by their volatility and failure to saponify. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. volatile volatility index Related Content Daily Word Quiz: erpsichore Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language