geocoronium
English
[edit]Etymology
[edit]From geo- + corona + -ium, coined by Alfred Wegener in 1911.
Noun
[edit]geocoronium (uncountable)
- (geophysics, meteorology, obsolete) A hypothetical gaseous chemical element proposed to explain certain spectroscopic lines, and the green glow, found in the polar aurorae, that was later found to be explained by singly-ionized oxygen.