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
Origin of praseodymiumModern Latin ; from praseodymia, a rare earth (; from Classical Greek prasios: see prase) + Modern Latin (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
A soft, silvery, malleable, ductile rare-earth element that develops a characteristic green tarnish in air. It occurs naturally with other rare earths in monazite and bastnaesite and is used to color glass and ceramics yellow, as a core material for carbon arcs, and in metallic alloys. Atomic number 59; atomic weight 140.908; melting point 931°C; boiling point 3,520°C; specific gravity 6.773; valence 3, 4. See Periodic Table.
Origin of praseodymiumGerman Praseodym : Greek praseos, variant of prasios, leek-green (from prason, leek) + German -dym, didymium.
- A metallic chemical element (symbol Pr) with an atomic number of 59.
From Ancient Greek Ï€ÏÎ¬ÏƒÎ¹Î¿Ï‚ (prasios, “leek-green") + didymium.