Dionysius the Areopagite (?ær???p???a?t) n (Biography) 1st century ad, Greek Christian, thought to have been the first Bishop of Athens: long considered the author of influential theological works actually written c. 500. See Pseudo-DionysiusCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014