syzygia
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)
Latin > English (Lewis & Short)
sȳzygĭa: ae, f., = συζυγία (pure Lat. conjugatio),
I a joining together or conjunction, a syzygy, Tert. Praescr. 46.