/ Dictionary / Index D dihydromorphinone: Meaning and Definition of Find definitions for: di•hy•dro•mor•phi•none Pronunciation: (dī-hī"drō-môr'fu-nōn"), [key] — n. Pharm. a narcotic compound, CHON, prepared from morphine and used chiefly as an analgesic. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. dihydroergotamine dihydrostreptomycin Related Content Daily Word Quiz: candor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language