V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

DCT
       Data Collection Terminator (BTX)


V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

DCT
       Defect-and-Change-Management (CICS, IBM)


V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

DCT
       Discrete Cosine Transformation (MPEG, JPEG)


The Free On-line Dictionary of Computing (30 December 2018):

DCT

   Discrete Cosine Transform