/ Dictionary / Index C citronella oil: Meaning and Definition of Find definitions for: citronel'la oil" Pronunciation: [key] a light-yellowish pungent oil, distilled from citronella, used in the manufacture of liniment, perfume, and soap, and as an insect repellent. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. citronellal citronellol Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language