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  blue shark blue-sky  
CONTENTS · INDEX · ILLUSTRATIONS · BIBLIOGRAPHIC RECORD
   The American Heritage® Dictionary of the English Language: Fourth Edition.  2000.
 
blueshift
 
SYLLABICATION:blue·shift
PRONUNCIATION:  blshft
NOUN: A decrease in the wavelength of radiation emitted by an approaching celestial body as a consequence of the Doppler effect.
ETYMOLOGY:From the fact that the shorter wavelengths of light are at the blue end of the visible spectrum.
 
 
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
  blue shark blue-sky  
 
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