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WordNet-Online
Definitions from WordNet
Noun rare-earth element has 1 sense
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Definitions from the WebRare-Earth ElementDefinition:A rare-earth element refers to any of a group of seventeen chemical elements found in the periodic table. These elements include scandium, yttrium, and the fifteen lanthanides. They are known for their unique magnetic, electrical, and optical properties. Senses:Sense 1:Part of Speech: Noun Definition: A group of chemical elements with atomic numbers ranging from 21 to 39 and 57 to 71, respectively. Sample Sentence: The demand for rare-earth elements has been steadily increasing due to their use in high-tech industries. Sense 2:Part of Speech: Noun Definition: Any of the elements of the lanthanide series having atomic numbers 57 through 71. Sample Sentence: Rare-earth elements are often used as catalysts in various chemical reactions. Sense 3:Part of Speech: Adjective Definition: Describing an element or mineral that is found in very small quantities or is difficult to extract. Sample Sentence: The mining company discovered a rare-earth element deposit in a remote region of the country. Sense 4:Part of Speech: Adjective Definition: Relating to or denoting any of the elements of the lanthanide series. Sample Sentence: The researchers conducted experiments to study the magnetic properties of rare-earth element compounds. Possible Related Products: | ||||
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