DN explained

DN, dN, or dn may refer to:

Science, technology, and mathematics

Computing and telecommunications

Digital number, the discrete of an analog value sampled by an analog-to-digital converter
Directory number in a phone system
Distinguished Name, an identifier type in the LDAP protocol
Domain name, an identification string used within the Internet
Domain Nameserver
DOS Navigator, a DOS file manager

Mathematics

dn (elliptic function), one of Jacobi's elliptic functions
D_n, a Coxeter–Dynkin diagram
D_n, a dihedral group
D_n, a Dirichlet kernel

Other uses in science and technology

Decinewton (symbol dN), an SI unit of force
Diametre Nominal, the European equivalent of Nominal Pipe Size
Diameter of a rolling element bearing in mm multiplied by its speed in rpm
Deductive-nomological model, a philosophical model for scientific explanation
Double negative T cells, also called CD4^-CD8^-
Diabetic nephropathy
Diabetic neuropathy
DN Factor, a value used to calculate the correct lubricant for bearings

Entertainment

Double nil, a bid in the game of Spades (card game)
Descriptive chess notation
Duke Nukem, a video game character and a game franchise

Journalism

The Ball State Daily News, the student newspaper of Ball State University in Muncie, Indiana
, a Norwegian newspaper
, a Swedish newspaper
Democracy Now!, the flagship program for the Pacifica Radio network
Diário de Notícias, a Portuguese newspaper

Places

Denmark (WMO country code DN)
DN postcode area for Doncaster and surrounding areas, UK
Dunedin, New Zealand (commonly abbreviated DN)
Dadra and Nagar Haveli, a former union territory of India

Other uses

DN, IATA code of Dan Air
Down (disambiguation)
Diebold Nixdorf, American financial technology company
Digha Nikaya, a part of the Buddhist Tripitaka
International DN, a kind of iceboat
Dreadnought, a class of warships
Debit note, a commercial document
DN, then IATA code for Norwegian Air Argentina
DN, then IATA code for Senegal Airlines