/ Dictionary / Index A anionic detergent: Meaning and Definition of Find definitions for: anion'ic deter'gent Pronunciation: [key] — Chem. Chem. any of a class of synthetic compounds whose anions are alkali salts, as soap, or whose ions are ammonium salts. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. anion anis Related Content Daily Word Quiz: fervor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language