praseodymium (redirected from Praseodynium)

pra·se·o·dym·i·um  (prz--dm-m, prs-)

n. Symbol Pr

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 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 935°C; boiling point 3,127°C; specific gravity 6.8; valence 3, 4. See Table at element.

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[New Latin, from German Praseodym : Greek praseos, variant of prasios, leek-green (from prason, leek) + (di)dymium.]

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praseodymium [ˌpreɪzɪəʊˈdɪmɪəm]

n

(Chemistry / 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

[New Latin, from Greek prasios of a leek-green colour + didymium]

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praseodymium  (prz--dm-m)

Symbol Pr

A soft, malleable, silvery metallic element of the lanthanide series that develops a green tarnish in air. It is used to add a yellow tint to glass and ceramics and to make the glass used in welding goggles. Atomic number 59; atomic weight 140.908; melting point 935°C; boiling point 3,127°C; specific gravity 6.8; valence 3, 4. See Periodic Table.

Thesaurus

Noun

1.

praseodymium - a soft yellowish-white trivalent metallic element of the rare earth group; can be recovered from bastnasite or monazite by an ion-exchange process atomic number 59, Pr 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

praseodymium [ˌpreɪzɪəʊˈdɪmɪəm] N → praseodimio m

praseodymium

n (Chem) → Praseodym nt