Neodymium /ˌniːəʊˈdɪmiəm/ [ Greek. neos – new and dymos – similar] – a chemical element belonging to the lanthanoid family, symbol Nd (lat. Neodymium), at. n. 60, at. m. 144.24. N. – silvery-white metal; density 7010 kg/m3, liquid=1024oC. N. oxide, for example: is used in the production of colorless glasses that absorb ultraviolet rays.