abbr.	NBS	US National Bureau of Standards (from 1988 - NIST)
		abbr.	NCB	Network Connect Block
		abbr. comp.	NCC	Network Contro Center
		abbr.	NCCJ	National Conference of Christians and Jews
		abbr. comp.	NCSA	National Centre for Supercomputing Applications
		abbr. comp.	NCSA	National Computer Security Association, before 1985 - CSC
		abbr.	NCSC	National Computer Security Centre
		abbr.	NCU	Network Control Utility
		abbr. phys.	NDR	Negative Differential Resistance
		abbr.	NDR	Non-Destructive Readout
		abbr. file.ext.	NDX	Database index file (dBase)
		abbr.	NED	Nuke Encryption Device (Polymorphic Generator)
		abbr.	NEDO	National Economic Development Council/Office
		abbr.	NEGS	Net Export of Goods and Services
		geogr.	Nep.	Nepal
		abbr.	NETACP	Network Ancillary Process
		geogr.	Neth.	Netherlands
		abbr.	Neuro	neurology
		abbr. file.ext.	NEW	News about smth.
		abbr. file.ext.	NFO	Any information
		abbr.	NFO	National Farmers Organization
		abbr.	NFSR	Network File System
		abbr.	NFSS	New Font Selection Scheme
		abbr. file.ext.	NG	Hypertext Database (Norton Guide)
		abbr.	NGO	nongovernmental organization
		abbr. astr.	NGST	Next Generation Space Telescope
		abbr. med.	NGU	nongonococcal urethritis
		abbr. med.	NHL	non-Hodgkin's lymphoma
		abbr. med.	NHLBI	National Heart Blood Lung Institute
		abbr.	NI	Network Interconnect
		abbr.	NIC	newly-industrializing country
		geogr.	Nic.	Nicaragua
		abbr.	NIFF	Notation Interchange File Format
		geogr.	Nig.	Nigeria
		abbr. comp.	NITF	New Image Transition Format
		lat.	nl	non licet (not permitted)
		lat.	nl	non liquet (it is not clear)
		lat.	nl	non longe (not far)
		abbr.	NL	NewLine character
		abbr. astr.	NLC	Noctilucent Clouds
		abbr. phys.	NLC	Non-Linear Capacitance
		abbr. phys.	NLC	Non-Linear Chromatography (or the corresponding peak function of the same name)
		abbr.	NLS	Network Licensing System
		abbr. tech.	NMT	Nordic Mobile Telephones
		abbr.	nn.	note, notes (footnote, footnotes)
		abbr.	NNI	net national income
		file.ext.	nnn	Arj archive volumes up to 999 (ARJ archiver)
		abbr.	NNP	net national product
		abbr.	NO-OP	NO-OPeration instruction
		abbr. astr.	NOAO	National Optical Astronomy Observatories
		med.	noc	night
		abbr.	non seq.	it does not follow
		abbr.	non-U	not upper class
		lat.	Nor	Norma (the Square, Наугольник)
		geogr.	Northn.	Northamptonshire
		abbr.	NOS	Network OS
		abbr.	NPL	National Physics Laboratory
		abbr. lat.	NPO	nihil per os ("nothing by mouth" (no food or water))
		abbr.	NPU	Numeric Processor Unit
		abbr.	NPX	numeric processor extension
		abbr.	nr	near
		abbr.	NRA	National Recovery Administration
		abbr.	NRA	National Rifle, Association of America
		abbr.	NRLG	Nuke Random Life Generator
		abbr.	NSAD	Network Security Architecture and Design
		abbr. astr.	NSCVS	New Catalogue of Suspected Variables
		abbr. comp.	NSIF	NATO Secondary Image Format
		abbr. med.	NSILA	nonsuppressable insulin-like activity
		abbr. astr.	NSO/SP	National Solar Observatory (Sacramento Peak)
		abbr. astr.	NSSDC	National Space Science Data Centre
		abbr.	NSSFC	National Severe Storms Forecast Centre
		abbr. med.	NTG	nitroglycerin
		abbr. tech.	NTT	Nippon Telegraph and Telephone Corporation
		abbr.	NU	name unknown
		abbr.	NURBS	Not-Uniform Rational B-Spline
		abbr.	nv	non voting
		abbr.	NV RAM	NonVolatile RAM
		abbr.	nvd	no value declared
		abbr. comp.	NVP	No Visible Porosity
		abbr.	NWSFO	National Weather Service Forecast
		abbr. geogr.	NY	New York City
		abbr. comp.	NYSERNET	New York State Educational Research Network
		abbr.	O & M	organization and method
		abbr.	O S.	ounces
		abbr.	o.a.	old account
		abbr.	o.a.	on account
		abbr.	o.a.	open account
		abbr.	O.B.E.	Order of the British Empire
		abbr.	o.c.	outward cargo
		abbr.	O.F.M.	Order of Friars Minor (Franciscans)
		abbr.	O.P.	Order of Preachers (Dominicans)
		abbr.	o.s.	old series
		abbr.	O.S.B.	Order of Saint Benedict
		abbr.	o/c	overcharge
		abbr.	o/d	overdraft
		abbr.	o/h	overhead
		abbr.	O/S	on sale
		abbr.	O/S	outstanding
		abbr.	OAP	old age pension
		abbr.	OB-GYN	obstetrics-gynaecology

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