/thawr"on, thohr"-/ , n. Chem.
a radioactive isotope of radon, produced by the disintegration of thorium. Symbol: Tn; at. wt.: 220; at. no.: 86.
[ 1925-30; THOR(IUM) + -ON 2 ]
/thawr"on, thohr"-/ , n. Chem.
a radioactive isotope of radon, produced by the disintegration of thorium. Symbol: Tn; at. wt.: 220; at. no.: 86.
[ 1925-30; THOR(IUM) + -ON 2 ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012