Top Definition
Radioactive element named after the late Jacob Larson. Its accidental discovery is widely known to have caused him fatal rectal hemorrhaging. Jacob's last words where a collection of inaudible jargons such as "Yugamo" "Aigheee!" and "Imgaaaeey" hence the name Jargonium

Symbol JG

A Jargonium atom has 92 protons and 99 electrons, of which 7 are valence electrons
That Jargonium sure fucked up Jake Larson.
by A very smart chemist December 03, 2013
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