English edit

 
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Etymology edit

Named after the University of North Carolina, +‎ -ium.

Noun edit

carolinium (uncountable)

  1. (obsolete) A supposed chemical element isolated from thorium.
    • 1914, H[erbert] G[eorge] Wells, The World Set Free[1]:
      There, as more and more of the Carolinum became active, the bomb spread itself out into a monstrous cavern of fiery energy at the base of what became very speedily a miniature active volcano.