San Antonian (sæn æn?t??n???n) adj (Placename) of or relating to San Antonio or its inhabitantsn (Placename) a native or inhabitant of San AntonioCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014