n. [ So called by
n. See Mangonel. [ 1913 Webster ]
n. [ Cf. F. manganate. ] (Chem.) A salt of manganic acid. [ 1913 Webster ]
☞ The manganates are usually green, and are well-known compounds, though derived from a hypothetical acid. [ 1913 Webster ]
n. (Chem.) A manganate. [ Obs. ] [ 1913 Webster ]
n. [ F. manganèse, It. manganese, sasso magnesio; prob. corrupted from L. magnes, because of its resemblance to the magnet. See Magnet, and cf. Magnesia. ] (Chem.) An element obtained by reduction of its oxide, as a hard, grayish white metal, fusible with difficulty (melting point 1244° C), but easily oxidized. Its ores occur abundantly in nature as the minerals pyrolusite, manganite, etc. Symbol
☞ An alloy of manganese with iron (called ferromanganese) is used to increase the density and hardness of steel. [ 1913 Webster ]
Black oxide of manganese,
Manganese dioxide
Manganese peroxide,
Black manganese
n. A brass alloy having from 1 to 4 percent of manganese added to harden it; made by adding manganese to the copper and zinc used in brass.
. Cast steel containing a considerable percentage (10-14) of manganese, which makes it very hard and tough and highly resistant to wear. See Alloy steel, above. [ Webster 1913 Suppl. ]
a. [ Cf. F. manganésien. ] (Chem.) Manganic. [ R. ] [ 1913 Webster ]
a. [ Cf. F. manganésique. ] (Chem.) Manganic. [ Obs. ] [ 1913 Webster ]
a. (Chem.) Manganous. [ 1913 Webster ]