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didymium

Didymium is a 8 letter word which starts with the letter D and ends with the letter M for which we found 1 definitions.

Definition
(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.
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