/ Dictionary / Index I immemorial: Meaning and Definition of Find definitions for: im•me•mo•ri•al Pronunciation: (im"u-môr'ē-ul, -mōr'-), [key] — adj. extending back beyond memory, record, or knowledge: from time immemorial. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: immemorial (Thesaurus) Immelmann immense Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language