Editing DN (section)

==Science, technology, and mathematics==
===Computing and telecommunications===
* Digital number, the discrete  of an analog value sampled by an [[analog-to-digital converter]]
* [[Telephone number|Directory number]] in a phone system
* [[Lightweight Directory Access Protocol|Distinguished Name]], an identifier type in the LDAP protocol
* [[Domain name]], an identification string used within the Internet
* [[Name server|Domain Nameserver]]
* [[DOS Navigator]], a DOS file manager

===Mathematics===
* [[dn (elliptic function)]], one of Jacobi's elliptic functions
* D<sub>n</sub>, a [[Coxeter–Dynkin diagram]]
* D<sub>n</sub>, a [[dihedral group]]
* D<sub>n</sub>, a [[Dirichlet kernel]]

===Other uses in science and technology===
* [[Newton (unit)|Decinewton]] (symbol dN), an SI unit of force
* [[Preferred_metric_sizes#ISO_6708_Nominal_Diameter|Diametre Nominal]], the European equivalent of [[Nominal Pipe Size]]
* [[Rolling element bearing#DN|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 cell]]s, also called CD4<sup>&minus;</sup>CD8<sup>&minus;</sup>
* [[Diabetic nephropathy]]
* [[Diabetic neuropathy]]
* [[DN Factor]], a value used to calculate the correct lubricant for bearings