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5 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 pra·seo·dym·i·um /ˌprezioˈdɪmiəm, ˌpresi-/

From: DICT.TW English-Chinese Medical Dictionary 英漢醫學字典

 pra·seo·dym·i·um /ˌprezɪoˈdɪmɪəm, ˌpresɪ-/ 名詞

From: Webster's Revised Unabridged Dictionary (1913)

 Pra·se·o·dym·i·um n.  Chem. An elementary substance, one of the constituents of didymium; -- so called from the green color of its salts.  Symbol Ps.  Atomic weight 143.6.

From: WordNet (r) 2.0

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

From: Elements database 20001107

 Symbol: Pr
 Atomic number: 59
 Atomic weight: 140.907
 Soft silvery metallic element, belongs to the lanthanoids. Only natural
 isotope is Pr-141 which is not radioactive.  Fourteen radioactive isotopes
 have been artificially produced. Used in rare-earth alloys. Discovered in
 1885 by C.A. von Welsbach.