Meaning of polygonaceous

pol•y•go•na•ceous

Pronunciation: (pol"ē-gu-nā'shus, pu-lig"u-nā'-), [key]
— adj.
  1. belonging to the Polygonaceae, the buckwheat family of plants. Cf.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.