po·​lyg·​o·​num | \ pə-ˈli-gə-nəm How to pronounce polygonum (audio) \

Definition of polygonum

: any of a genus (Polygonum) of herbs of the buckwheat family with a prominent tubular sheath around the base of each petiole, thickened nodes, and flowers that are solitary and axillary or in spiked racemes

called also knotweed

First Known Use of polygonum

1562, in the meaning defined above

History and Etymology for polygonum

borrowed from New Latin Polygonum, genus name, going back to Latin polygonus, polygona "knotweed," borrowed from Greek polýgonon, from poly- poly- + -gonum, derivative of góny "knee, joint or knot (in the stem of a plant)" — more at knee entry 1

Note: The genus name was introduced by linnaeus in Species plantarum (Stockholm, 1753), tomus 1, p. 359.

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The first known use of polygonum was in 1562

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Last Updated

23 Aug 2022

Cite this Entry

“Polygonum.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/polygonum. Accessed 24 Sep. 2022.

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