Results for A.U.
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Dictionary:

A.U.

or a.u.
abbr.

angstrom unit


 
 
Cosmic Lexicon: AU

(astronomical unit) The average Earth-Sun distance, equal to 149.5 million kilometers or 93 million miles.

 
 

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Copyrights:

Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2007. Published by Houghton Mifflin Company. All rights reserved.  Read more
Cosmic Lexicon. Copyright 1996 Planetary Science Research Discoveries.  Read more

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