from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A soft, silvery rare-earth element used in nuclear research. Atomic number 66; atomic weight 162.50; melting point 1,407°C; boiling point 2,600°C; specific gravity 8.536; valence 3. See Table at element.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A metallic chemical element (symbol Dy) with an atomic number of 66.
from the GNU version of the Collaborative International Dictionary of English
- n. An element of the rare earth-group. Symbol Dy; at. wt., 162.5.
from The Century Dictionary and Cyclopedia
- n. In chem., one of the supposedly distinct elements of the yttrium group contained in samarskite and gadolinite, closely related to holmium, but distinguished from it by a special absorption-spectrum.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a trivalent metallic element of the rare earth group; forms compounds that are highly magnetic
New Latin, from Greek dusprositos, difficult to approach : dus-, dys- + prositos, approachable (from prosienai, to approach : pros-, toward + ienai, i-, to go; see ei- in Indo-European roots).(American Heritage® Dictionary of the English Language, Fourth Edition)
From Ancient Greek δυσπρόσιτος (dusprositos, "hard to get"). (Wiktionary)