/ Dictionary / Index S stannic acid: Meaning and Definition of Find definitions for: stan'nic ac'id Pronunciation: [key] — Chem. Chem. any of the series of acids usually occurring as amorphous powders and varying in composition from HSnOto HSnO. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. stannic stannic chloride Related Content Daily Word Quiz: stringent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language