Dy

Collins
World English Dictionary
Dy
 
the chemical symbol for
dysprosium

DY
 
abbreviation for
Benin (international car registration)
 
[from Dahomey]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

Dy
The symbol for the element dysprosium.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
Dy  
The symbol for dysprosium.
dysprosium   (dĭs-prō'zē-əm)  Pronunciation Key 
Symbol Dy
A soft, silvery metallic element of the lanthanide series. Because it has a high melting point and absorbs neutrons well, dysprosium is used to help control nuclear reactions. Atomic number 66; atomic weight 162.50; melting point 1,407°C; boiling point 2,600°C; specific gravity 8.536; valence 3. See Periodic Table.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Abbreviations & Acronyms
Dy
dysprosium
DY
Benin (international vehicle ID)
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Encyclopedia Britannica
Encyclopedia

dy

(Dy), chemical element, rare-earth metal of the lanthanoid series of the periodic table. A relatively hard and very reactive metal, it is oxidized by air and by water. Its high melting point and ability to absorb neutrons make it useful in control rods for nuclear reactors. Its compounds have been used for making laser materials, as components in some electronic equipment, and as phosphor activators

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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