Found 2 items, similar to Praseodymium.
English → English (WordNet) Definition: praseodymium praseodymium 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 ]
English → English (gcide) Definition: Praseodymium Praseodymium \Pra`se*o*dym"i*um\, n. [Praseo- + didymium.] (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. [1913 Webster]