/ Dictionary / Index C citronella: Meaning and Definition of Find definitions for: cit•ron•el•la Pronunciation: (si"tru-nel'u), [key] — n. a fragrant grass, Cymbopogon nardus, of southern Asia, cultivated as the source of citronella oil. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. citronalis citronellal 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