N/A means not applicable
eg. Test score for a science test: N/A because the class did not study science this term.
Without the slash and without context, it can also mean Numerical Aperture (referring to the angle light comes out of (or goes into) an optical fiber, among other things), Not Acceptable, Sodium (although that is usually Na,) and nanoAmp (although, again, it is usual to use lower case for both letters in that case: na.)
Na+ is the medical and chemical symbol for the sodium ion.
Na can refer to sodium, and n/a to not applicable or not available.
Answer is in english: Ans: DOS is the abbreviation of "Disc Operating System"
The chemical symbol for sodium is Na.
It doesn't have an abbreviation per se. Its atomic symbols is Na.NA
There are a number of abbreviations for South America. The more common ones are SA, S.Am., and S. America.
The abbreviation "NA" does not represent any American state.
Sodium is a chemical element with the symbol Na .The chemical abbreviation for sodium metabisulphite is as follows Na 2 S 2 0 5 NACL is the abbreviation of sodium chloride.
NA stands for national association - it is a federally chartered bank.
NA is not a country. It is an abbreviation commonly used to represent North America or sometimes for Not Applicable.
Atl. (Atlantic Ocean)
luko na 2