didymium

American  

[dahy-dim-ee-uhm, dih-] / daɪˈdɪm i əm, dɪ- /

noun

Chemistry.

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

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didymium British  

/ daɪˈdɪmɪəm, dɪ- /

noun

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

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

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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

Oxide of Didymium, DO. in the oxidizing flame.Dissolves to a clear dark amethystine glass.

From A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations by Anonymous

The spores of Didymium crustaceum were sown upon a heap of leaves in autumn.

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 MacBride, Thomas H. (Thomas Huston)

A more minute species than Didymium serpula, without characteristic thickenings upon the threads of the capillitium, and wanting the peculiar large cells of this species.

From The Myxomycetes of the Miami Valley, Ohio by Morgan, A. P. (Andrew Price)

Didymium chrysopeplum B. & C. also belongs here and not with C. citrinum.

From The Myxomycetes of the Miami Valley, Ohio by Morgan, A. P. (Andrew Price)

Spumaria is essentially related to Didymium by the crystals of lime upon the walls of the sporangia.

From The Myxomycetes of the Miami Valley, Ohio by Morgan, A. P. (Andrew Price)