didymium

[ dahy-dim-ee-uh m, di- ]

/ daɪˈdɪm i əm, dɪ- /

noun Chemistry.

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

Nearby words

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

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for didymium

This induced Schrader to throw all the didermas into his new genus, Didymium.
The North American Slime-Moulds|Thomas H. (Thomas Huston) MacBride
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
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
This looks like a didymium and in so far justifies the opinion of earlier students.
The North American Slime-Moulds|Thomas H. (Thomas Huston) MacBride

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

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