N.A.

N.A.

1.
National Army.
2.
North America.
3.
not applicable.
4.
Microscopy, numerical aperture.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Abbreviations & Acronyms
n.a.
Latin non allocatur (it is not allowed)
N.A.
North America
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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