coronium
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English
Etymology
From corona + -ium, coined by a certain A. Gruenwald.
Noun
coronium (uncountable)
- (historical) A supposed chemical element, hypothesized in the 19th century in order to explain a green emission line seen during the total solar eclipse of 7 August 1869 (actually highly ionized iron).
Coordinate terms
Dutch
Etymology
Borrowed from English coronium, coined by a certain A. Gruenwald. Equivalent corona + -ium.
Pronunciation
Noun
coronium n (uncountable)
- (historical, astronomy, chemistry) coronium (obsolete chemical element, hypothesised to exist based on a green emission line)