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A.U.

or a.u

1.
angstrom unit.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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a.u.

angstrom unit

A.U.

Latin auris uterque (each ear, both ears)
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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