geocoronium (English, noun)
expansion: geocoronium (uncountable)
Senses:
topics: climatology
meteorology
natural-sciences
glosses: 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.
tags: obsolete
uncountable
Forms: