Definition of polygonum in English:

polygonum

Line breaks: pol|yg¦onum
Pronunciation: /pəˈlɪɡ(ə)nəm
 
/

noun

A plant of a genus that includes knotgrass and knotweed, some of which are weeds and some are garden ornamentals.
  • Genus Polygonum, family Polygonaceae
More example sentences
  • Also on February 15, 310 acres in Santa Cruz County were proposed as critical habitat for the Scotts Valley spineflower (Chorizanthe robusta var. hartwegii) and the Scotts Valley polygonum.
  • ‘I love how it grows into the polygonum,’ Julie says.
  • The Scotts Valley polygonum, a small annual in the buckwheat family, has linear-shaped leaves and produces white flowers.

Origin

modern Latin, from Greek polu- 'many' + gonu 'knee, joint' (because of the swollen joints sheathed by stipules).

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