ἀνταφαίρεσις
From LSJ
ἑτέρως ἠδύνατο βέλτιον ἢ ὡς νῦν ἔχει κατεσκευάσθαι → otherwise they could have been constructed better than they are now (Galen, On the use of parts of the body 4.143.1 Kühn)
German (Pape)
[Seite 245] ἡ, gegenseitige Subtraktion, Nicom. arithm. 1, 13 g. E.
Spanish (DGE)
-εως, ἡ mat. sustracción Nicom.Ar.1.13.11.
