(grammar) a tense of the verb in classical Greek and in certain other inflected languages, indicating past action without reference to whether the action involved was momentary or continuous Compare perfect (sense 8), imperfect (sense 4)
aoristic, adjective aoristically, adverb
C16: from Greek aoristos not limited, from a-1 + horistos restricted, from horizein to define
1580s, the simple past tense of Gk. verbs, from Gk. aoristos (khronos) "indefinite (tense)," from priv. prefix a- "not" + horistos "limited, defined," verbal adj. from horizein "to limit, define," from horos "boundary, limit, border."