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

The species as here described includes Didymium ravenelii B. & C., Physarum simile Rost., and Physarum murinum Lister.

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

Didymium nectri�forme B. & C., is evidently this same species.

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

Didymium lateritium B. & R. Physarum inequale Peck, is the same species.

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

In the Kew Herbarium, it is said, are two American specimens under one label, "Didymium pusillum."

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)

This is Didymium spumarioides, Fr.; it is probably a dwarf form of the next variety.

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