καταρχ-ή · katarch-ē — LSJ
beginning, πράγματος BGU 1209.11 (i B.C.), cf. Callicr. ap. Stob. 4.28.16, Plb. 2.12.8; κ. διαφορᾶς Id. 22.4.14, al.; ἀνέμου Mim. Oxy. 413.213.
Astrol., forecast of an undertaking, voyage, etc., Serapio in Cat.Cod.Astr. 1.99, Vett.Val. 187.15 (pl.); περὶ καταρχῶν, title of poems by Maximus and Heph.Astr.
part of victim first offered, IG 2(2).1359.
primacy, sovereignty, τοῦ ἁθρόου Epicur. Fr. 314; starting-point, basis, Chrysipp.Stoic. 2.246; τὰς Χάριτας [εἶναι] τὰς ἡμετέρας κ. Phld. Piet. 14.