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Definition of Didymium
1. n. A rare metallic substance usually associated with the metal cerium; -- hence its name. It was formerly supposed to be an element, but has since been found to consist of two simpler elementary substances, neodymium and praseodymium. See Neodymium, and Praseodymium.
Definition of Didymium
1. Noun. A mixture of praseodymium and neodymium once thought to be an element (symbol ''Di''). ¹
¹ Source: wiktionary.com
Definition of Didymium
1. a mixture of rare-earth elements [n -S]
Medical Definition of Didymium
1.
Lexicographical Neighbors of Didymium
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