coronium


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coronium

(kəˈrəʊnɪəm)
n
(Elements & Compounds) a hypothetical element whose existence was proposed in the 19th century to explain a green line seen in the solar coronal spectrum; this is now known to be highly-ionized iron and nickel
References in periodicals archive ?
Egg capsules, eggs and embryos of the southwestern Atlantic gastropod Coronium coronatum (Gastropoda: Muricidae).
Like helium, this line was thought to be from an as-yet unknown element, provisionally named coronium. As the periodic table began to fill up, however, there was no place left to put this new element.
According to this theory these lines, once believed caused by an unknown element, called coronium, are due to the extreme ionization of iron atoms in the sun's corona.
* The story which accompanies the mystical element coronium (or FeXIV) in the corona and its discovery by the likes of Harkness, Young, Grotian, and Edlen [151-153] has been recalled [265-268].