/ Dictionary / Index D dihydrostreptomycin: Meaning and Definition of Find definitions for: di•hy•dro•strep•to•my•cin Pronunciation: (dī-hī"drō-strep"tu-mī'sin), [key] — n. Pharm. an antibiotic, CHNO, derived by organic synthesis from and believed to be less toxic than streptomycin: used in the form of its sulfate chiefly in the treatment of tuberculosis. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: dihydrostreptomycin (Thesaurus) dihydromorphinone dihydrotachysterol Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language