neodymium

American  

[nee-oh-dim-ee-uhm] / ˌni oʊˈdɪm i əm /

noun

Chemistry.

1. a rare-earth, metallic, trivalent element occurring with cerium and other rare-earth metals, and having rose-colored to violet-colored salts. Nd; 144.24; 60; 6.9 at 20°C.

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neodymium British  

/ ˌniːəʊˈdɪmɪəm /

noun

1. a toxic silvery-white metallic element of the lanthanide series, occurring principally in monazite: used in colouring glass. Symbol: Nd; atomic no: 60; atomic wt: 144.24; valency: 3; relative density: 6.80 and 7.00 (depending on allotrope); melting pt: 1024°C; boiling pt: 3127°C

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neodymium Scientific  

/ nē′ō-dĭm′ē-əm /

1. A shiny, silvery metallic element of the lanthanide series. It is used to make glass for welders' goggles and purple glass for lasers. Atomic number 60; atomic weight 144.24; melting point 1,024°C; boiling point 3,027°C; specific gravity 6.80 or 7.004 (depending on allotropic form); valence 3.

2. See Periodic Table

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Etymology

Origin of neodymium

From New Latin, dating back to 1880–85; see origin at neo-, didymium

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Example Sentences

See Examples For:

neodymium

Rare-earth metals such as dysprosium and neodymium are used in magnets in electric motors.

From The Wall Street Journal ● Oct. 26, 2026

Lynas has been producing so-called light rare earths—including neodymium and praseodymium—in Malaysia for more than 13 years.

From The Wall Street Journal ● Oct. 1, 2026

Between them, they arranged six atoms, including a dioxygen molecule, that connected the two neodymium atoms.

From Science Daily ● Jul. 29, 2026

Serra Verde is a Brazilian mining company controlling the Pela Ema deposit, which contains rare earth elements neodymium, praseodymium, Dysprosium, and terbium, all of which are key elements for making magnets.

From Barron's ● Apr. 20, 2026

Who, then, will be the first to discover a use for indium, germanium, terbium, thulium, lanthanum, neodymium, scandium, samarium and others as unknown to us as tungsten was to our fathers?

From Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries by Edwin E. Slosson

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