The Free On-line Dictionary of Computing (19 January 2023):

Common Data Format
CDF

    (CDF) A library and toolkit based on a
   self-describing data format for scalar and multidimensional
   data.  CDF aims to be platform- and discipline-independent.  A
   scientific data management package (CDF Library) allows developers
   to manage data and metadata through APIs.  CDF has built-in
   support for data compression (gZip, RLE, Huffman) and
   files larger than two gigabytes.  There are interfaces for C,
   FORTRAN, Java, Perl, C#, Visual Basic, IDL and MATLAB.

   CDF Home (http://cdf.gsfc.nasa.gov/)

   (2015-04-26)