υἱϊκός
From LSJ
τούτου δὲ συμβαίνοντος ἀναγκαῖον γίγνεσθαι πάροδον καὶ τροπὰς τῶν ἐνδεδεμένων ἄστρων → but if this were so, there would have to be passings and turnings of the fixed stars
Greek (Liddell-Scott)
υἱϊκός: -ή, -όν, (υἱὸς) ὁ ἀνήκων ἢ ἁρμόζων εἰς υἱόν, Διον. Ἀρεοπ. - Ἐπίρρ. -κῶς, Βασίλ. Μέγ. τ. 2, σ. 833Α.