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ăgērăton: i, n., = ἀγήρατον> (not growing old),I a plant that does not readily wither, perhaps Achillea Ageraton, Linn.; Plin. 27, 4, 4, § 13.—Ăgērătos, i, m., a designation of one of the Æons of Valentinus, Tert. adv. Val. 8.