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  Erbil ere  
CONTENTS · INDEX · ILLUSTRATIONS · BIBLIOGRAPHIC RECORD
   The American Heritage® Dictionary of the English Language: Fourth Edition.  2000.
 
erbium
 
SYLLABICATION:er·bi·um
PRONUNCIATION:  ûrb-m
NOUN:Symbol Er A soft, malleable, silvery rare-earth element, used in metallurgy and nuclear research and to color glass and porcelain. Atomic number 68; atomic weight 167.26; melting point 1,497°C; boiling point 2,900°C; specific gravity 9.051; valence 3. See table at element.
ETYMOLOGY:After Ytterby, a town in Sweden.
 
 
The American Heritage® Dictionary of the English Language, Fourth Edition. Copyright © 2000 by Houghton Mifflin Company. Published by the Houghton Mifflin Company. All rights reserved.

CONTENTS · INDEX · ILLUSTRATIONS · BIBLIOGRAPHIC RECORD
  Erbil ere  
 
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