ACTINIUM


Meaning of ACTINIUM in English

/ak tin"ee euhm/ , n. Chem.

a radioactive silver-white metallic element that glows blue in the dark, resembling the rare earths in chemical behavior and valence. Symbol: Ac; at. no.: 89; at. wt.: 227.

[ 1900-05; ACTIN- + -IUM ]

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