Definition of didymium in English:

didymium

noun dɪˈdɪmɪəmdīˈdimēəm

mass nounChemistry

A mixture containing the rare earth elements praseodymium and neodymium, used to colour glass for optical filters. It was originally regarded as a single element.
〔化〕钕镨混合物
Example sentencesExamples
- This showed that considerably higher properties at elevated temperatures can be developed by didymium (neodidymium plus praseodidymium) and by cerium-free MM than by MM.
- The discovery of praseodymium is credited to the Austrian chemist Carl Auer who found that a previously discovered element, didymium, was actually a mixture of two other new elements.
- Didymia, and its supposed elemental associate, didymium, then vanished from the chemical pantheon.
- In 1879 Paul-Emile Lecoq, gallium's discoverer, announced that there was another element contaminating didymium, which he called samarium.

Origin

Mid 19th century: from Greek didumos 'twin' (because it was closely associated with lanthanum) + -ium (used as a suffix for new metals).

Definition of didymium in US English:

didymium

noundīˈdimēəm

Chemistry

A mixture containing the rare earth elements praseodymium and neodymium, used to color glass for optical filters. It was originally regarded as a single element.
〔化〕钕镨混合物
Example sentencesExamples
- The discovery of praseodymium is credited to the Austrian chemist Carl Auer who found that a previously discovered element, didymium, was actually a mixture of two other new elements.
- Didymia, and its supposed elemental associate, didymium, then vanished from the chemical pantheon.
- This showed that considerably higher properties at elevated temperatures can be developed by didymium (neodidymium plus praseodidymium) and by cerium-free MM than by MM.
- In 1879 Paul-Emile Lecoq, gallium's discoverer, announced that there was another element contaminating didymium, which he called samarium.

Origin

Mid 19th century: from Greek didumos ‘twin’ (because it was closely associated with lanthanum) + -ium (used as a suffix for new metals).

单词	didymium
释义	Definition of didymium in English: didymium noun dɪˈdɪmɪəmdīˈdimēəm mass nounChemistry A mixture containing the rare earth elements praseodymium and neodymium, used to colour glass for optical filters. It was originally regarded as a single element. 〔化〕钕镨混合物 Example sentencesExamples This showed that considerably higher properties at elevated temperatures can be developed by didymium (neodidymium plus praseodidymium) and by cerium-free MM than by MM. The discovery of praseodymium is credited to the Austrian chemist Carl Auer who found that a previously discovered element, didymium, was actually a mixture of two other new elements. Didymia, and its supposed elemental associate, didymium, then vanished from the chemical pantheon. In 1879 Paul-Emile Lecoq, gallium's discoverer, announced that there was another element contaminating didymium, which he called samarium. Origin Mid 19th century: from Greek didumos 'twin' (because it was closely associated with lanthanum) + -ium (used as a suffix for new metals). Definition of didymium in US English: didymium noundīˈdimēəm Chemistry A mixture containing the rare earth elements praseodymium and neodymium, used to color glass for optical filters. It was originally regarded as a single element. 〔化〕钕镨混合物 Example sentencesExamples The discovery of praseodymium is credited to the Austrian chemist Carl Auer who found that a previously discovered element, didymium, was actually a mixture of two other new elements. Didymia, and its supposed elemental associate, didymium, then vanished from the chemical pantheon. This showed that considerably higher properties at elevated temperatures can be developed by didymium (neodidymium plus praseodidymium) and by cerium-free MM than by MM. In 1879 Paul-Emile Lecoq, gallium's discoverer, announced that there was another element contaminating didymium, which he called samarium. Origin Mid 19th century: from Greek didumos ‘twin’ (because it was closely associated with lanthanum) + -ium (used as a suffix for new metals).
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