"Wadd" is a word in ENGLISH

A limpid, colorless, inflammable liquid from the slow oxidation of alcohol under the influence of platinum black.

A native oxide of manganese, of dark brownish black color. It was named from a Mr. Braun of Gotha.

A black submetallic mineral consisting of oxide of chromium and iron; -- called also chromic iron.

Green vitriol, or sulphate of iron; a green crystalline substance, of an astringent taste, used in making ink, in dyeing …

A dark green amorphous dyestuff, produced by the oxidation of aniline in the presence of copper or vanadium salts; -- …

An oxide of iron (Fe3O4) occurring in isometric crystals, also massive, of a black color and metallic luster. It is …

One of the oxides of manganese; -- called also gray manganese ore. It occurs in brilliant steel-gray or iron-black crystals, …

An earthy black oxide of copper, arising from the decomposition of other ores.

An iron-black or steel-gray mineral, consisting chiefly of the oxides of iron and titanium. It is commonly massive, but occurs …

A pitch-black mineral consisting chiefly of the oxide of uranium; uraninite. See Uraninite.

A hydrous oxide of manganese, occurring in smooth, botryoidal forms, and massive, and having an iron-black or steel-gray color.

A mineral consisting chiefly of uranium oxide with some lead, thorium, etc., occurring in black octahedrons, also in masses with …

An element of the chromium group, found in certain rare minerals, as pitchblende, uranite, etc., and reduced as a heavy, …