1. Floating aquatic plant of the duckweed family, with multiple roots and round-oval fronds
   "great duckweed forms a green carpet on still water";
   - water flaxseed, Spirodela polyrrhiza

Derived forms: great duckweeds

Type of: duckmeat, duck's meat, duckweed

Part of: genus Spirodela, Spirodela

Encyclopedia: Great duckweed