/ Dictionary / Index H hemicrania: Meaning and Definition of Find definitions for: hem•i•cra•ni•a Pronunciation: (hem"i-krā'nē-u), [key] — n. pain in one side of the head. migraine. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: hemicrania (Thesaurus) hemichordate hemicycle Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language