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Syllabification: ne·bu·li·um
Pronunciation: /nəˈbyo͞olēəm/

Entry from US English dictionary

Definition of nebulium in English:


Chemistry , historical
A hypothetical chemical element proposed in the 1860s to explain certain lines in the spectra of nebulae, later discovered to arise from forbidden transitions in oxygen and nitrogen ions.

Definition of nebulium in:

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Word of the day tenebrous
Pronunciation: ˈtɛnɪbrəs
dark; shadowy or obscure