/ Dictionary / Index H hydrosulfurous: Meaning and Definition of Find definitions for: hy•dro•sul•fu•rous Pronunciation: (hī"drō-sul-fyoor'us, -dru-sul'fur-us), [key] — adj. hyposulfurous. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hydrosulfite hydrotaxis Related Content Daily Word Quiz: lunar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language