A.like verdigris, green, Hp.Prog.11, Dsc.5.79, Gal. 10.871; of bile, Id.18(1).107; “κακόνοια . . τουτὶ τὸ ἰῶδες . . ἀφίησιν” Plu.2.565c.
2. rust-coloured, ferruginous, Thphr.Lap.37, Call. Hist.4, Dsc.5.152.
3. poisonous, “ὕδωρ” Ath.2.42a, cf. Gal.11.327; ὀδόντες, of serpents, Philostr.Jun.Im.5: metaph., of persons, virulent, Ptol.Tetr.158.