IONIUM


Meaning of IONIUM in English

/uy oh"nee euhm/ , n. Chem.

a naturally occurring radioactive isotope of thorium. Symbol: Io; at. no.: 90; at. wt.: 230.

[ 1905-10; ION + -IUM ]

Random House Webster's Unabridged English dictionary.      Полный английский словарь Вебстер - Random House .