dysprosium

dysprosium

a soft silvery-white metallic element of the lanthanide series: used in laser materials and as a neutron absorber in nuclear control rods. Symbol: Dy; atomic no.: 66; atomic wt.: 162.50; valency: 3; relative density: 8.551; melting pt.: 1412?C; boiling pt.: 2567?C

Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

dysprosium

[dis′prō·zē·əm]

(chemistry)

A metallic rare-earth element, symbol Dy, atomic number 66, atomic weight 162.50.

McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.