[ trig-uh-nuh s ]
/ ˈtrɪg ə nəs /
having three angles or corners, as a stem or seed; triangular.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for trigonous
Grain is narrow, trigonous, oblong, translucent and shining.
Grain is sub-globose, oblong or trigonous, closely invested by the glume and its palea.
British Dictionary definitions for trigonous
/ (ˈtrɪɡənəs) /
(of stems, seeds, and similar parts) having a triangular cross section
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012