Meaning of praseodymium in English:


(also Pr)

Pronunciation /ˌpreɪzɪə(ʊ)ˈdɪmɪəm/


mass noun
  • The chemical element of atomic number 59, a soft silvery-white metal of the lanthanide series.

    ‘They aimed beams of heavy ions at targets of selected elements to produce nuclei with 75 neutrons and 55, 57, 59, and 61 protons (cesium, lanthanum, praseodymium, and promethium) in a wide variety of spin states.’
    • ‘I have elements in there that I've never even contemplated using before - stuff like indium, tantalum, ytterbium, and praseodymium.’
    • ‘One of the oldest uses for praseodymium is in the manufacture of misch metal, a pyrophoric metal (a metal that gives sparks when struck) used to make lighter flints and tracer bullets.’
    • ‘Didymium itself, meanwhile, was revealed as a phantom, a mixture of two new elements that Karl Auer in Austria discovered in 1885 and called neodymium (new didymium) and praseodymium (green didymium).’
    • ‘Protective effects of phytosomal silybin were observed using rats pre-exposed to toxins such as praseodymium, galactosamine, and the mushroom poisons phalloidin and alpha-amanitin.’


Late 19th century modern Latin, from German Praseodym, from Greek prasios ‘leek-green’ (because of its green salts) + German Didym ‘didymium’.