ACTINIDE
Meaning of ACTINIDE in English
/ak"teuh nuyd'/ , n. Chem.
any element of the actinide series.
[ 1940-45; ACTIN- + -IDE, on the model of LANTHANIDE ]
Random House Webster's Unabridged English dictionary.
Полный английский словарь Вебстер - Random House .
2012