ὀψιανὸς
ὀψιᾰνὸς λίθος,, a black stone, perh.
A). obsidian, Pliny's obsiana (neut. pl.), HN 36.196 , cf. Peripl.M.Rubr. 5 , L. 285 , : written 26 ὀψειανόν PLeid.X. 36 ;[ὀψ]ειανόν dub. in Supp.Epigr. 2.776 i 15 (Syria, iii A. D.). (Named from its discoverer Obsius, v. l. c.; obsidiana is f.l. ibid.; prob. ᾱ by nature.)