polygonum

From translingual Polygonum, from Ancient Greek πολύγονον (polúgonon, “knotweed”), from πολύς (polús, “many”) +‎ γόνυ (gónu, “knee”), so called in allusion to the numerous joints, or neuter of πολύγονος (polúgonos, “prolific”), from πολύς (polús, “many”) +‎ γόνος (gónos, “offspring”). Related to polygon (from γωνία (gōnía, “corner, angle”), a derivative of γόνυ (gónu)).

polygonum (plural polygonums or polygona)

1. (botany) Any of many plants, of the family Polygonaceae, embracing a large number of species, including bistort, knotweed, smartweed, etc.

From Ancient Greek πολύγωνον (polúgōnon).

• (Classical Latin) IPA^(key): [pɔ.lyˈɡoː.nũː]
• (modern Italianate Ecclesiastical) IPA^(key): [po.liˈɡɔː.num]

polygōnum n (genitive polygōnī); second declension

1. (mathematics) polygon

Second-declension noun (neuter).

• “polygonum”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• polygonum in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.