ἑκατέρωθεν
From LSJ
τούτων γάρ ἑκάτερον κοινῷ ὀνόματι προσαγορεύεται ζῷον, καί ὁ λόγος δέ τῆς οὐσίας ὁ αὐτός → and these are univocally so named, inasmuch as not only the name, but also the definition, is the same in both cases (Aristotle, Categoriae 1a8-10)
English (LSJ)
Adv.
A on each side, on either hand, Hdt.3.102, Th.2.75 : c. gen., ἑ. τῆς πόλεως Id.3.6 ; τὸ ἑ. μέρος Pl.Phd.112e ; at each end, Gp.5.27.4. 2 on both sides, by father and mother, Poll.8.85.
German (Pape)
[Seite 752] von jeder von beiden Seiten her, von beiden Seiten her, so daß sie einzeln gedacht werden; Thuc. 2, 75; τῆς πόλεως 3, 6; Xen. Cyr. 3, 3, 9; τὸ ἑκ. μέρος Plat. Phaed. 112 e.