Meaning of DYSPROSIUM in English

/dis proh"see euhm, -shee-/ , n. Chem.

a rare-earth metallic element, highly reactive and paramagnetic, found in small amounts in various rare-earth minerals, as euxenite and monazite: used to absorb neutrons in nuclear reactors. Symbol: Dy; at. wt.: 162.50; at. no.: 66.

[ 1885-90; dysprós ( itos ) hard to get at ( dys- DYS- + pros- to + itós, ptp. of iénai to go) + -IUM ]

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