praseodymium

From Ancient Greek πράσιος (prásios, “leek-green”) + didymium.

• IPA^(key): /ˌpɹeɪzioʊˈdɪmiəm/, /ˌpreɪziːəˈdɪmiəm/, enPR: prāzēōdĭm'ēəm

• Audio (US); /ˌpɹeɪzioʊˈdɪmiəm/:

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• Audio (General American); /ˌpreɪziːəˈdɪmiəm/:

  (file)

praseodymium (usually uncountable, plural praseodymiums)

1. A chemical element (symbol Pr) with an atomic number of 59, a soft, silvery, malleable and ductile rare earth metal, valued for its magnetic, electrical, chemical, and optical properties.
   • 2025 August 30, Gillian Tett, “America's new ‘patriotic’ capitalism”, in FT Weekend, page 7:

     But the government also gave MP Materials a decade-long guaranteed price floor for its products, such as the rare earths neodymium-praseodymium, at twice recent market rates (leaving aside the fact prices have soared this week as MP Materials has cut ties with China).

• praseodymium trichloride

praseodymium

1. alternative form of praseodym
   • 1994, Københavns universitet, Aarbog for københavns Universitet, kommunitetet og den Polytekniske læreanstalt, Danmarks tekniske højskole:

     I metallet praseodymium er der to forskellige slags magnetiske elektroner, ...

     (please add an English translation of this quotation)

   • 1901, Teknisk ukeblad i samarbeide med teknikk:

     ... et eller flere af stoffene: ceriuni-nitrat, neodymiuinnitrat, praseodymium-nitrat  ...

     (please add an English translation of this quotation)

   • 1985, Københavns universitet, Årbog:

     ... har arbejdet koncentreret sig om Praseodymium.

     (please add an English translation of this quotation)

• Audio:

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praseodymium n (uncountable, no diminutive)

1. praseodymium

• (Classical Latin) IPA^(key): [pra.se.ɔˈdy.mi.ũː]
• (modern Italianate Ecclesiastical) IPA^(key): [pra.s̬e.oˈd̪iː.mi.um]

praseodymium n (genitive praseodymiī); second declension

1. praseodymium

Second-declension noun (neuter).