didymium
Americannoun
noun
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a mixture of the metallic rare earths neodymium and praseodymium, once thought to be an element
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a mixture of rare earths and their oxides used in colouring glass
Etymology
Origin of didymium
< New Latin < Greek dídym ( os ) twin ( see didymous) + -ium; so named by Swedish chemist Carl Mosander (1797–1858), who discovered it in 1843, from its close association with lanthanum
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The separation of lanthanum and didymium in the solution from which the cerium has been precipitated is effected by precipitating them together as oxalates, igniting, and dissolving in dilute nitric acid.
From A Text-book of Assaying: For the Use of Those Connected with Mines. by Cornelius Beringer
It occurs in certain rare minerals, as cerite, gadolinite, orthite, etc., and was so named from the difficulty of separating it from cerium, didymium, and other rare elements with which it is usually associated.
From The Gutenberg Webster's Unabridged Dictionary Section I, J, K, and L by Project Gutenberg
This looks like a didymium and in so far justifies the opinion of earlier students.
From The North American Slime-Moulds A Descriptive List of All Species of Myxomycetes Hitherto Reported from the Continent of North America, with Notes on Some Extra-Limital Species by Thomas H. (Thomas Huston) MacBride
It suggests a didymium in its form and habit, but is near a badhamia.
From The North American Slime-Moulds A Descriptive List of All Species of Myxomycetes Hitherto Reported from the Continent of North America, with Notes on Some Extra-Limital Species by Thomas H. (Thomas Huston) MacBride
The rare metals cerium, lauthanum, and didymium have been lately investigated by Drs. Hillebrand and Norton, in Bunsen's laboratory.
From The Galaxy, Volume 23, No. 2, February, 1877 by Various
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
