NDL

NDL is an abbreviation used for several distinct organizations, leagues, and technical terms across different fields. In sports, the National Development League (NDL) is a British motorcycle speedway competition that serves as the third tier of the sport within the United Kingdom. Established in 1995 as the Conference League and renamed in 2019, the league provides a development platform for emerging riders, featuring teams from England, Scotland and Wales. Races are held on short oval tracks, and the league operates under the governance of the Speedway GB regulatory body, adhering to standardized equipment and safety regulations.

In the realm of information technology, NDL can denote Network Definition Language, a scripting language employed to describe the topology and configuration of computer networks. The language facilitates automated network provisioning, documentation, and simulation, allowing administrators to define nodes, links, routing policies and service parameters in a structured, machine‑readable format.

The abbreviation also appears in the pharmaceutical sector as the National Drug List, a government‑maintained catalogue of approved medications used for reimbursement and prescribing guidelines in several countries. This list helps standardize drug availability, pricing and therapeutic classification for public health systems.

Other notable uses include the Nippon Dental Association’s registry of dental laboratories (NDL), the Norwegian Defence Library, and the National Democratic League, a historical political organization in the United States. Despite the varied contexts, each instance of NDL functions as a concise identifier for a specific institutional or technical entity.