/ Dictionary / Index H hypermnesia: Meaning and Definition of Find definitions for: hy•perm•ne•sia Pronunciation: (hī"purm-nē'zhu), [key] the condition of having an unusually vivid or precise memory. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hypermicrosoma hypermotility Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language