Tardenoisian (?t??d??n??z??n) adj (Historical Terms) of or referring to a Mesolithic culture characterized by small flint instruments[C20: after Tardenois, France, where implements were found]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014