praseodymium

noun

a silvery, malleable chemical element, one of the rare-earth elements, whose salts are generally green in color and are used to color glasses and enamels: symbol, Pr; at. no., 59

Etymology: ModL < praseodymia, a rare earth (< Gr prasios: see prase) + ModL (di)dymium (see didymium): so named (1885) by C. A. von Welsbach (1858-1929), Austrian chemist, from its spectroscopic line and from being split from didymium