didymium

[ dahy-dim-ee-uhm, dih- ]

/ daɪˈdɪm i əm, dɪ- /

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noun Chemistry.

a mixture of neodymium and praseodymium, formerly thought to be an element. Symbol: Di

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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

Words nearby didymium

Didot point system, didrachm, Didrikson, didst, didy, didymium, didymous, didynamous, die, die away, dieback

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use didymium in a sentence

Didymium salts have a rose or violet colour, and impart (when in sufficient quantity) the same colour to the borax bead.
A Textbook of Assaying: For the Use of Those Connected with Mines.|Cornelius Beringer and John Jacob Beringer
A subnitrate of didymium is formed, and remains as an insoluble residue on extracting with hot water.
A Textbook of Assaying: For the Use of Those Connected with Mines.|Cornelius Beringer and John Jacob Beringer
Neodymium (Nd) forms the chief portion of the old “didymium.”
Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 4|Various
It is readily distinguished from Didymium minus by the much larger and more distinctly warted spores.
The Myxomycetes of the Miami Valley, Ohio|A. P. Morgan

Spumaria is essentially related to Didymium by the crystals of lime upon the walls of the sporangia.
The Myxomycetes of the Miami Valley, Ohio|A. P. Morgan

British Dictionary definitions for didymium

didymium

/ (daɪˈdɪmɪəm, dɪ-) /

noun

a mixture of the metallic rare earths neodymium and praseodymium, once thought to be an element

a mixture of rare earths and their oxides used in colouring glass

Word Origin for didymium

C19: from New Latin, from Greek didumos twin + -ium

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012