aorist tense noun2 •A grammatical category in some languages expressing perfective aspect and past tense of verbs; the aorist. •A set of verb forms in Ancient Greek featuring the grammatical category.Of the Aorist Tense, as of the Perfect, there are two distinct forms: the older form, commonly called the Second Aorist; and the more recent, commonly called the First Aorist — 1857 formsaorist tenses