/ Dictionary / Index D dihydroergotamine: Meaning and Definition of Find definitions for: di•hy•dro•er•got•a•mine Pronunciation: (dī-hī"drō-ûr-got'u-mēn", -min, -ûr"gu-tam'ēn, -in), [key] — n. Pharm. an ergot alkaloid, CHNO, used in the treatment of various types of migraine headache. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. dihydric dihydromorphinone 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