PROMETHIUM


Meaning of PROMETHIUM in English

/preuh mee"thee euhm/ , n. Chem.

a rare-earth, metallic, trivalent element. Symbol: Pm; at. no.: 61.

[ 1945-50; ]

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