/ Dictionary / Index C cacodyl group: Meaning and Definition of Find definitions for: cac'odyl group" Pronunciation: [key] the univalent group (CH)As−, derived from arsine. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. cacodylate cacodylic Related Content Daily Word Quiz: philanthropy Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language