διαγώνιος

ον, Adv.
A. from angle to angle, diagonal, Str. 2.1.36, Vitr. 9.1.5, Aristid.Quint. 3.3, Antyll. ap. Orib. 6.23.3, Procl. Hyp. 3.16; δ. πάσσαλος Nicom. Harm. 6. Adv. ‐ίως Id. Ar. 2.12.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project