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tripterous

[trip-ter-uh s]
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adjective Botany.
  1. three-winged; having three wings or winglike expansions.
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Origin of tripterous

1865–70; < Greek tripteros; see tri-, -pterous
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for tripterous

tripterous

adjective
  1. (of fruits, seeds, etc) having three winglike extensions or parts
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Word Origin

C19: from tri- + Greek -pteros, from pteron wing
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