follow Dictionary.com

Yours, Etc.: Origins and Uses of 8 Sign-Offs

n/a

1.
no account.
2.
not applicable.

N.A.

1.
National Army.
2.
North America.
3.
not applicable.
4.
Microscopy, numerical aperture.

numerical aperture

noun, Microscopy
1.
a measure of the resolving power of a microscope, equal to the index of refraction of the medium in which the object is placed multiplied by the sine of the angle made with the axis by the most oblique ray entering the instrument, the resolving power increasing as the product increases.
Abbreviation: N.A.
Origin
1875-1880
1875-80
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
British Dictionary definitions for n a

n/a

abbreviation
1.
not applicable
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
Related Abbreviations for n a

n.a.

Latin non allocatur (it is not allowed)

N.A.

North America

N/A

  1. not applicable
  2. not available
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source

Word of the Day

Difficulty index for n/a

Few English speakers likely know this word

Word Value for n

0
0
Scrabble Words With Friends

Quotes with n a

Nearby words for n a