NOS


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NOS

Abbreviation for nitric oxide synthase.

NOS

Abbreviation for:
National Occupational Standards 
nitric oxide synthase
no organisms seen
non-organ specific
not on staff
not otherwise specified

NOS

not otherwise specified. In medical billing and coding, it refers to a diagnosis without specific or distinguishing features.
References in classic literature ?
He flung the knife on the mat behind him, snatched up the revolver, and having no time to unload it, emptied it shot after shot all over the floor.
There's nothing like the old country-side for me, and no music like the twang of the real old Saxon tongue, as one gets it fresh from the veritable chaw in the White Horse Vale; and I say with "Gaarge Ridler," the old west-country yeoman, -
The White Horse Vale, remember, was traversed by no great road-- nothing but country parish roads, and these very bad.
I am a vagabond; I have been away from home no less than five distinct times in the last year.
This masterpiece is best where no hands but nature's have been laid on it.
She makes very light of gospels and prophets, as one who has a great many more to produce and no excess of time to spare on any one.
It was a tradition of the ancient world that no metamorphosis could hide a god from a god; and there is a Greek verse which runs,--
You came back by an unexpected way, and so he had no warning until you were at the very door.
One hardly likes to throw suspicion where there are no proofs.
Holmes made no further allusion to the matter that day, though he sat lost in thought for a long time after our belated dinner.
There being no stage-coach next day, upon the road we wished to take, I hired 'an extra,' at a reasonable charge to carry us to Tiffin; a small town from whence there is a railroad to Sandusky.
We had the comfort of knowing, at least, that there was no danger of his falling asleep, for every now and then a wheel would strike against an unseen stump with such a jerk, that he was fain to hold on pretty tight and pretty quick, to keep himself upon the box.