rare earth element
noun Date: 1924 any of a series of metallic elements of which the oxides are classed as rare earths and which include the elements of the lanthanide series and sometimes yttrium and scandium — called also rare earth metal

New Collegiate Dictionary. 2001.

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  • Rare earth element — Rare earth ore, shown with a United States penny for size comparison These rare …   Wikipedia

  • rare earth element — rare earth UK [reə(r) ˈɜː(r)θ] / US [reər ˈɜrθ] or rare earth element UK / US noun [countable] Word forms rare earth : singular rare earth plural rare earths chemistry any of a group of metallic elements that have similar chemical properties and… …   English dictionary

  • rare earth element — n any of a series of metallic elements of which the oxides are classed as rare earths and which include the elements of the lanthanide series and sometimes yttrium and scandium called also rare earth metal …   Medical dictionary

  • rare-earth element — n. any of the series of metallic chemical elements, with consecutive atomic numbers of 57 (lanthanum) through 71 (lutetium) inclusive: see LANTHANIDE: often called rare earth metal …   English World dictionary

  • rare-earth element — /rair errth /, Chem. any of a group of closely related metallic elements, comprising the lanthanides, scandium, and yttrium, that are chemically similar by virtue of having the same number of valence electrons. Also called rare earth metal. [1955 …   Universalium

  • rare-earth element — noun any element of the lanthanide series (atomic numbers 57 through 71) • Syn: ↑rare earth, ↑lanthanoid, ↑lanthanide, ↑lanthanon • Hypernyms: ↑group, ↑grouping • Hyponyms: ↑ …   Useful english dictionary

  • rare earth element — retųjų žemių elementas statusas T sritis fizika atitikmenys: angl. rare earth element vok. Seltenerdelement, n rus. редкоземельный элемент, m pranc. élément de terres rares, m …   Fizikos terminų žodynas

  • rare-earth element — rare′ earth′ el ement n. chem. any of a group of closely related metallic elements, comprising the lanthanides, scandium, and yttrium, that are chemically similar in having the same number of valence electrons. Also called rare′ earth′ met al •… …   From formal English to slang

  • rare earth element — noun Any of a group of soft, lustrous, sometimes magnetic metals that form trivalent salts; they include the lanthanides plus yttrium, scandium, thorium and sometimes zirconium. Syn …   Wiktionary

  • rare-earth element — /rɛər ɜθ ˈɛləmənt/ (say rairr erth eluhmuhnt) noun 1. one of a group of closely related metallic elements of atomic number 57 to 72 inclusive, often divided into three groups: cerium metals (lanthanum, cerium, praseodymium, neodymium, promethium …   Australian English dictionary

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