tripterous

tripterous

(ˈtrɪptərəs)
adj
(Botany) (of fruits, seeds, etc) having three winglike extensions or parts
[C19: from tri- + Greek -pteros, from pteron wing]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014