ἴωσις
ἴωσις, refinement
ἴωσις [ῑ], εως, ἡ, (ἰόω)
- refinement (because freq. due to oxidization of impure substances), χρυσοῦ PMag.Leid.V. 6.18, cf. Olymp. Alch.p.94 B., Zos.Alch. p.145 B., al.
- 2 making of a tincture, ib. p.219 B.