praseodymium praseodymia • praseolite · · · Info · Definitions · Synonyms · Characters · · praseodymium · · Text Latin · · Script 12 · · Length Definitions · · · (noun) a soft yellowish-white trivalent metallic element of the rare earth group; can be recovered from bastnasite or monazite by an ion-exchange process. Synonyms: Pr, atomic number 59. · · Noun Definition 1 Synonyms · · · pr · · Synonym 1 atomic number 59 · · Synonym 2 Characters · · a latin small letter a U+0061 d latin small letter d U+0064 e latin small letter e U+0065 i latin small letter i U+0069 m latin small letter m U+006D o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 s latin small letter s U+0073 u latin small letter u U+0075 y latin small letter y U+0079