nb meaning in Academic & Science ?

Answer:

What is nanobarn mean?

A barn (symbol: b) is a metric unit of area equal to 10−28 m2 (100 fm2). Originally used in nuclear physics for expressing the cross sectional area of nuclei and nuclear reactions, today it is also used in all fields of high-energy physics to express the cross sections of any scattering process, and is best understood as a measure of the probability of interaction between small particles. A barn is approximately the cross-sectional area of a uranium nucleus. The barn is also the unit of area used in nuclear quadrupole resonance and nuclear magnetic resonance to quantify the interaction of a nucleus with an electric field gradient. While the barn never was an SI unit, the SI standards body acknowledged it in the 8th SI Brochure (superseded in 2019) due to its use in particle physics.

reference

Full Form	Category
Nuclear Bombing	Academic & Science
Nuclear Bomb	Academic & Science
Non-Black	Academic & Science
Nursing Building	Academic & Science
No Bracing	Academic & Science
nanobarn	Academic & Science
Negative Big	Academic & Science
Non-forest Brush	Academic & Science
National Body	Academic & Science
Net Benefit	Accounts and Finance
Natalie's Bunnies	Business
Non-Breaking	Business
Net Business	Business
Nights Booked	Business
NationsBank	Business
New Business	Business
Nigerian Breweries	Business
Niobium	Chemistry
NickelBack / Nickel Back	Community
Nota bene (Attention)	Community
Nimbian Brother	Community
No Broadcast	Community
Note Bene	Community
No Bible	Community
No Break	Community
News Bulletin	Community
Newton Brown	Community
Napoleon Bonaparte	Community
Neil Bogart	Community
Nero Bianco	Community
Nigeria Best	Community
Narrow Band	Computer and Networking
No Buts	Computing
Non Blank	Computing
Newton Book	Computing
Noise Blanker	Electronics
Text Document (nota Bene)	File Type
Number But	General
Notes Bibliography	General
Non Bound	General
Nutrient Broth	General
Nut Bolt	General
Nacer Bouhani	General
Noord Brabant	General
Nasal Bone	General
Negative Binomial	General
National Brand	General
Non Binding	General
Negative Bias	General
Neutral Battery	General
New Books	General
Nation Books	General
No Batteries	General
Normal Burst	General
No B****	General
Nose Boogers	General
New Breed	General
Navy Blue	General
New Basis	General
Number Of Bands	General
Noto Bene	General
Net Beans	General
Now Being	General
Not Blue	General
Nickolas Ball	General
New Build	General
North Broward	General
Nominal Budget	General
No Breath	General
No Bad	General
Nude Bundle	General
Nothing Better	General
Non Bore	General
No Brain	General
Nudie Burlgler	General
New Babylon	General
Net Balance	General
North Bridge	General
Nat Binding	General
Non Bereavement	General
New Balance	General
Never Bail	General
Non Binary	General
North Berwick	General
No Backup	Governmental
North Branch	Governmental
New Bedford	Governmental
Naples Beach	Governmental
Non Bank	Governmental
National Board	Governmental
National Battlefield	Governmental
The Naval Board	Governmental
Navy Basic	Governmental
NorthBound	Governmental
Newborn	Healthcare
NIMBHORA	Indian Railway Station
Neubau	International
Nota Benia	International
Nota Bien	International
Newbie Beauftragter	International
No Banner	Internet
No Bargaining	Jobs
Net Benefits	Jobs
Naive Bayes	Maths
Nose Bleed	Medical
Nocturnal Breeder	Medical
NeuroBlastoma	Medical
Notified Body	Medical
Nota Bene	Messaging
Nominal Bore	Military and Defence
New Blood	Military and Defence
North Beach	Military and Defence
Northampton and Bath Railroad (Conrail)	Regional
Norwegian (Bokmål)	Regional
New Brunswick	Regional
North Britain	Regional
North Belgium	Regional
New Britain	Regional
Norwegian (Bokm?)	Regional
Navigation Base	Space Science
Neutral Buoyancy	Space Science
Nitrogen Base	Space Science
No-bias	Space Science
Netball	Sports
No Ball	Sports
Non Blocking	Sports
Sterling Airlines	Transport & Travel