Ceredigion (?k?r??d??j?n) n (Placename) a county of W Wales, on Cardigan Bay: created in 1996 from part of Dyfed; corresponds to the former Cardiganshire (abolished 1974): mainly agricultural, with the Cambrian Mountains in the E and N. Administrative centre: Aberaeron. Pop: 77 200 (2003 est). Area: 1793 sq km (692 sq miles)Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014