/ Dictionary / Index A arsino: Meaning and Definition of Find definitions for: ar•si•no Pronunciation: (är-sē'nō), [key] — adj. Chem. containing the arsino group. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. arsine arsino group Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language