coronium

[ kuh-roh-nee-uh m ]

/ kəˈroʊ ni əm /

noun Astronomy.

a hypothetical element once thought to exist because certain spectral lines in the emission spectrum of the solar corona could not be identified by known elements. These lines were subsequently found to be emitted by certain highly ionized metals.

Nearby words

Origin of coronium

First recorded in 1885–90; coron(a) + -ium

Examples from the Web for coronium

At the supper table Wade and Arcot reported to the others the curious constants they had discovered for coronium.
The Black Star Passes|John W Campbell
I took a coronium hack saw that will eat through molybdenum steel like so much cheese, and it just wore its teeth off.
The Black Star Passes|John W Campbell
The spectrum of the corona showed few bright lines besides those of coronium and hydrogen.
Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 10|Various
The wave-length of coronium was found to be 5303 (not 5317 as previously supposed), and the brightness of the corona was measured.
Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 10|Various

And the extreme strength of the lux metal fiber made it stronger, pound for pound, than steel or coronium.
Islands of Space|John W Campbell