hydrargyriferous /haɪˈdɹɑː(ɹ)d͡ʒɪɹˈɪfəɹəs/ adjective1 •Bearing or producing mercury... antimonial silver accompanied by arsenic and galena; the hydrargyriferous with native mercury and cinnabar; the cupriferous with copper oxydes ... — 1851 formsmore hydrargyriferous · most hydrargyriferous