Ne`o*dym"i*um (?), n. [NL. See Neo-
, Didymium.] (Chem.) A rare metallic element
occurring in combination with cerium, lanthanum, and other rare
metals, and forming amethyst-colored salts. It was separated in 1885
by von Welsbach from praseodymium, the two having previously been
regarded as a single element (didymium). It is chiefly trivalent.
Symbol Nd; at. wt. 144.3.
Ne`o*dym"i*um (?), n. [NL. Dee Neo-
, and Didymium.] (Chem.) An elementary
substance which forms one of the constituents of didymium. Symbol Nd.
Atomic weight 140.8.
Ne`o*dym"i*um (?), n. [NL. See Neo-
, Didymium.] (Chem.) A rare metallic element
occurring in combination with cerium, lanthanum, and other rare
metals, and forming amethyst-colored salts. It was separated in 1885
by von Welsbach from praseodymium, the two having previously been
regarded as a single element (didymium). It is chiefly trivalent.
Symbol Nd; at. wt. 144.3.
