1. Plural of polygonum; plants of the genus Polygonum, including knotweeds and smartweeds, characterized by jointed stems and small flowers.
Usage: botanical term; often used in plural form

Examples

• The garden was overrun with polygonums that spread rapidly across the beds.
• Botanists studied various polygonums to understand their growth patterns.
• Several polygonums are considered invasive species in North America.
• The polygonums in the wetland area attracted numerous insects.
• Gardeners often struggle to control polygonums due to their hardy nature.