Zr

Collins
World English Dictionary
Zr
 
the chemical symbol for
zirconium

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

Zr
The symbol for the element zirconium.

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
Zr  
The symbol for zirconium.
zirconium   (zûr-kō'nē-əm)  Pronunciation Key 
Symbol Zr
A shiny, grayish-white metallic element that occurs primarily in zircon. It is used to build nuclear reactors because of its ability to withstand bombardment by neutrons even at high temperatures. Zirconium is also highly resistant to corrosion, making it a useful component of pumps, valves, and alloys. Atomic number 40; atomic weight 91.22; melting point 1,852°C; boiling point 4,377°C; specific gravity 6.56 (20°C); valence 2, 3, 4. See Periodic Table.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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FOLDOC
Computing Dictionary

zr definition

networking
The old country code for Zaire.
"cd" is now used instead, since Zaire changed its name to the Democratic Republic of the Congo.
(1999-01-27)

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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American Heritage
Abbreviations & Acronyms
Zr
zirconium
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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