praseodymium /pra·seo·dym·i·um/ (Pr) (pra″ze-o-dim´e-um) chemical element, at. no. 59.
praseodymium (Pr)
pra·se·o·dym·i·um (pr  z - -d m - m, prs-)n. Symbol Pr A soft malleable ductile rare-earth element that develops a characteristic green tarnish in air and is used to color glass and ceramics yellow and in metallic alloy. Atomic number 59. |
praseodymium (Pr)
[prā′sē·ōdīm′ē·əm]
Etymology: Gk, prasaios, light-green, didymos, twin
a rare earth metallic element. Its atomic number is 59, and its atomic mass is 140.91.
praseodymium
a chemical element, atomic number 59, atomic weight 140.907, symbol Pr. See Table 6.
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