auro-
(ˈɔːrəʊ)
comb. form of L. aurum gold, used chiefly in Chem. and Min., as in auro-ˈcephalous a., having a gold-coloured head; auro-ˈchloride, a compound of auric chloride with a base, a chloro-aurate; auro-plumˈbiferous a., containing lead mixed with gold; auro-teˈllurite, an ore of tellurium containing gold and silver, sylvanite.
| 1816 Cleaveland Min. 566 Auro-plumbiferous native tellurium. 1875 Bloxam Chem. 403 Aurochloride of sodium forms reddish yellow prismatic crystals. |