Advertisement

Advertisement

ionium

[ ahy-oh-nee-uhm ]

noun

, Chemistry.
  1. a naturally occurring radioactive isotope of thorium. : Io; : 90; : 230.


ionium

/ aɪˈəʊnɪəm /

noun

  1. obsolete.
    a naturally occurring radioisotope of thorium with a mass number of 230 Io
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


Discover More

Word History and Origins

Origin of ionium1

First recorded in 1905–10; ion + -ium
Discover More

Word History and Origins

Origin of ionium1

C20: from New Latin, from ion + -ium
Discover More

Example Sentences

Ionium expels an alpha particle and becomes radium, which is a bivalent element resembling barium belonging to the second group.

Advertisement

Advertisement

Advertisement

Advertisement


ion implantationionization