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noun
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.
Definition source: English Wiktionary via Wiktextract
Usage: obsolete, uncountable
Topics: climatology, meteorology, natural-sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
History
From geo- + corona + -ium, coined by Alfred Wegener in 1911.
