Advertising Terminology
   University of Texas in Austin dictionary of advertising terminology.
   http://advertising.utexas.edu/research/terms/

Alex Brown's Marketing and E-Commerce Dictionary of Terms
   A semi-open source dictionary covering terms related to marketing and the internet.
   http://www.udel.edu/alex/dictionary.html

IFLA.org - Glossary of Marketing Definitions
   Developed by using Peter Bennett's Dictionary of Marketing Terms. Gives references at the end for further reading.
   http://www.ifla.org/VII/s34/pubs/glossary.htm

Marketing Communications Glossary
   Dictionary of terms related to marketing communications - advertising, public relations, printing.
   http://www.marcommwise.com/cgi-bin/frames.cgi?page=/glossary.html&zone=glossary