ἀρχίθεος
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)
Greek (Liddell-Scott)
ἀρχίθεος: -ον, ὁ ἀπ’ ἀρχῆς θεὸς ὤν, ὁ αἰώνιος θεός, Διον. Ἀρεοπ. σ. 178 (223Β) κτλ.
Spanish (DGE)
-ον
divino desde el principio ἡ ἀ. ... τοῦ υἱοῦ τοῦ θεοῦ ὑπόστασις Ath.Al.M.28.929D, cf. Dion.Ar.DN M.3.649C.