praseodymium

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pra·se·o·dym·i·um

 (prā′zē-ō-dĭm′ē-əm, prā′sē-)
n. Symbol Pr
A soft, silvery, malleable, ductile element of the lanthanide series that develops a characteristic green tarnish in air. It occurs naturally with other rare-earth elements in the minerals 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.

[German Praseodym : Greek praseos, variant of prasios, leek-green (from prason, leek) + German -dym, didymium.]

praseodymium

(ˌpreɪzɪəʊˈdɪmɪəm)
n
(Elements & Compounds) a malleable ductile silvery-white element of the lanthanide series of metals. It occurs principally in monazite and bastnaesite and is used with other rare earths in carbon-arc lights and as a pigment in glass. Symbol: Pr; atomic no: 59; atomic wt: 140.90765; valency: 3; relative density: 6.773; melting pt: 931°C; boiling pt: 3520°C
[C20: New Latin, from Greek prasios of a leek-green colour + didymium]

pra•se•o•dym•i•um

(ˌpreɪ zi oʊˈdɪm i əm, ˌpreɪ si-)

n.
a rare-earth metallic trivalent element, named from its green salts. Symbol: Pr; at. wt.: 140.91; at. no.: 59; sp. gr.: 6.77 at 20°C.
[1880–85; praseo- (comb. form representing Greek prásios leek-green, derivative of práson leek) + (di) dymium]

pra·se·o·dym·i·um

(prā′zē-ō-dĭm′ē-əm)
Symbol Pr A soft, silvery, easily shaped metallic element of the lanthanide series that develops a green tarnish in air. It is used to color glass and ceramics yellow and to make glass used in goggles for welders. Atomic number 59. See Periodic Table.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.praseodymium - a soft yellowish-white trivalent metallic element of the rare earth grouppraseodymium - a soft yellowish-white trivalent metallic element of the rare earth group; can be recovered from bastnasite or monazite by an ion-exchange process
metal, metallic element - any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
bastnaesite, bastnasite - a yellow-to-brown mineral that is a source of rare earth elements
monazite - a reddish-brown mineral containing rare earth metals; an important source of thorium and cerium
Translations
празеодим
praseodym
praseodymium
praseodüüm
praseodyymi
praséodyme
praseodimij
prazeodímium
praseódým
プラセオジム
praseodymium
prazeodimis
prazeodym
praseodímio
praseodim
prazeodim
praseodym
praseodim
празеодим

praseodymium

[ˌpreɪzɪəʊˈdɪmɪəm] Npraseodimio m

praseodymium

n (Chem) → Praseodym nt