ἑπτάκις
From LSJ
Ἡ δὲ Σελήνη γενομένη μὲν ἐκ τῆς ἀντανακλάσεως τοῦ ἡλιακοῦ φωτὸς → the moon having been made from the reflection of sunlight (Vettius Valens, Anthologies 1.14)
English (LSJ)
[ᾰ], Adv.
A seven times, Pi.O.13.40, Ar.Lys.698, etc.:— poet. ἑπτάκι Simon.156, A.R.3.861, etc.: also in later Prose, SIG 1068.8 (Patmos, iii/ii B. C.), Iamb.in Nic.p.17 P.:—Lacon. ἑπτάκιν IG5(1).213.16 (V B.C.).