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Definition of Neodymium
1. Noun. A yellow trivalent metallic element of the rare earth group; occurs in monazite and bastnasite in association with cerium and lanthanum and praseodymium.
Generic synonyms: Metal, Metallic Element
Substance meronyms: Bastnaesite, Bastnasite, Monazite
Definition of Neodymium
1. n. An elementary substance which forms one of the constituents of didymium. Symbol Nd. Atomic weight 140.8.
2. n. A rare metallic element occurring in combination with cerium, lanthanum, and other rare metals, and forming amethyst-colored salts. It was separated in 1885 by von Welsbach from praseodymium, the two having previously been regarded as a single element (didymium). It is chiefly trivalent. Symbol Nd; at. wt. 144.3.
Definition of Neodymium
1. [n -S]
Medical Definition of Neodymium
1.