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polygonaceous

American  
[pol-ee-guh-ney-shuhs, puh-lig-uh-ney-] / ˌpɒl i gəˈneɪ ʃəs, pəˌlɪg əˈneɪ- /

adjective

  1. belonging to the Polygonaceae, the buckwheat family of plants.

polygonaceous British  
/ pəˌlɪɡə-, ˌpɒlɪɡəˈneɪʃəs /

adjective

  1. of, relating to, or belonging to the Polygonaceae, a chiefly N temperate family of plants having a sheathing stipule (ocrea) clasping the stem and small inconspicuous flowers: includes dock, sorrel, buckwheat, knotgrass, and rhubarb

"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

Etymology

Origin of polygonaceous

1870–75; < New Latin Polygonace ( ae ) ( Polygon ( um ) the type genus (< Greek polýgonon knotgrass, literally, something with many joints; poly-, knee, -gon ) + -aceae -aceae ) + -ous

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.