ψαμμουργία
ψαμμουργία, art of extracting gold from sand
ψαμμ-ουργία, ἡ, and ψαμμ-ουργική, ἡ,
- art of extracting gold from sand, Zos.Alch. p.241 B.
ψαμμουργία, art of extracting gold from sand