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

In a study published in the Journal of the American Chemical Society, Hernández Sánchez and his colleagues reported a method that allowed dioxygen to form pi interactions with neodymium, a lanthanide metal.

From Science Daily ● Jul. 29, 2026

A typical EV motor uses strong, permanent magnets made from rare earths such as neodymium to spin the rotor and propel the car.

From The Wall Street Journal ● Jun. 2, 2026

Light elements, including neodymium and praseodymium, are used for permanent magnets.

From Barron's ● May 6, 2026

For example, neodymium is found at 20 parts per million in the Earth's crust, in comparison copper is at 27.

From BBC ● Feb. 5, 2026

It was formerly supposed to be an element, but has since been found to consist of two simpler elementary substances, neodymium and praseodymium.

From The Gutenberg Webster's Unabridged Dictionary Section D and E by Project Gutenberg

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