CDF

(Computers) file format for files that defines WWW channels (with information about the Web pages, images, ActiveX controls, page content, etc.)

CDF may refer to:Cardiff Central railway station, Wales; National Rail station code CDFCollider Detector at FermilabChief of the Defence Force, commander of the Australian Defence ForceCiskei Defence ForcesCongolese franc, the ISO 4217 code for the currency of the Democratic Republic of Congo
See more at Wikipedia.org...

national coal board

Abbreviation for combined distribution frame.

A distribution frame that combines the functions of main and intermediate distribution frames and contains both vertical and horizontal terminating blocks. (188 ) Note 1: The vertical blocks are used to terminate the permanent outside lines entering the station. Horizontal blocks are used to terminate inside plant equipment. This arrangement permits the association of any outside line with any desired terminal equipment. These connections are made either with twisted pair wire, normally referred to as jumper wire, or with optical fiber cables, normally referred to as jumper cables. Note 2: In technical control facilities, the vertical side may be used to terminate equipment as well as outside lines. The horizontal side is then used for jackfields and battery terminations.

Common Data Format. A library and toolkit for multi-dimensional data sets.