4.Linguistics. Attic reduplication: a form of reduplication (reduplicationn. 2b) as exemplified in ancient Greek ἀκήκοα from ἀκουω, ἤγαγον from ἄγω. [After Hellenistic Greek Ἀττικὸς ἀναδιπλασιασμός, although not in fact restricted to Attic Greek.]
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1833 J. G. TiarksConjugation of Greek Verbi. 8 In verbs beginning with a vowel, the first syllable is sometimes repeated before the temporal augment in the perf., which is called the Attic reduplication.