I0047400 (ĭm′ə-môr′ē-əl)adj. Reaching beyond the limits of memory, tradition, or recorded history.[Medieval Latin immemoriālis : Latin in-, not; see in-1 + Latin memoriālis, memorial; see memorial.]im′me·mo′ri·al·ly adv.IdiomsSeeimmemorialLegalSeeImmemorial