duckweed
Noun: A very small, free-floating aquatic plant that typically grows on the surface of still or slow-moving freshwater bodies like ponds, lakes, and ditches. It is one of the smallest flowering plants and often forms a green carpet on the water.
Duckweed is used to refer to these specific plants collectively. It is often discussed in contexts of ecology, water quality, and sometimes as a food source for aquatic animals. - The entire surface of the pond was covered with a thick layer of duckweed. - Scientists study duckweed for its potential in wastewater treatment. - Ducks and fish often eat duckweed.
- As a bioindicator: Duckweed growth can indicate nutrient levels (like nitrogen and phosphorus) in water, often signaling eutrophication.
- The rapid spread of duckweed in the lake is a bioindicator of high nutrient pollution.
- In biotechnology and research: Due to its simple structure and fast growth, duckweed is used in laboratories for studies in plant physiology, genetics, and phytoremediation (using plants to clean pollutants).
- The research project uses duckweed to test the toxicity of various chemicals.
- Lemna: The scientific genus name for the most common type of duckweed.
- Lemnoideae: The subfamily to which duckweeds belong.
- Water lentil: A less common name for duckweed, referring to its small, lens-like shape.
- Pond scum (Note: This is a more general and informal term that can refer to various floating algae and plants, not exclusively duckweed.)
- Water lens
The word "duckweed" does not have other common, unrelated meanings. It refers specifically to the aquatic plant.
There are no common idioms or phrasal verbs that use the word "duckweed" itself. It is primarily a technical/botanical term.
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any small or minute aquatic plant of the family Lemnaceae that float on or near the surface of shallow ponds
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