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

CSV
       Client SMTP Validation (SMTP, SPAM)


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

CSV
       Comma Separated Values


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

comma separated values
CSV

    (CSV) A file format used as a portable
   representation of a database.  Each line is one entry or
   record and the fields in a record are separated by commas.
   Commas may be followed by arbitrary space and/or tab
   characters which are ignored.  If field includes a comma, the
   whole field must be surrounded with double quotes.

   (1995-05-06)