epochality noun3 •(rare) The state or quality of pertaining to an epoch. •(rare) A state of being momentous; importance; significance.Derrida gives a rather tentative beginning of an answer: The unfolding of difference is perhaps not solely the truth of Being, or of the epochality of Being. — 2016 •(rare) The primitial abilitude pervading someone or something from which the rousing of an epoch stems.