Lemna

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Definition

Noun: 1. A genus of minute aquatic plants: Lemna is the scientific genus name for a group of very small, free-floating aquatic plants commonly known as duckweeds. These plants typically consist of a simple, leaflike structure (a frond) and a single root, and they are found on or just below the surface of still or slow-moving freshwater.

Usage
  • is a specialized biological term. It is primarily used in scientific, botanical, and ecological contexts.
  • It functions as a proper noun (the genus name) and is always capitalized.
  • In everyday language, the common name "duckweed" is used instead.
Examples
  • Scientific Context:
    • The pond's surface was covered with a green film of Lemna.
    • Lemna minor is one of the most widespread species of duckweed.
    • Researchers studied the growth rate of Lemna under different nutrient conditions.
Advanced Usage
  • In Ecological Studies: species are often used as model organisms in studies of plant physiology, phytoremediation (using plants to clean water), and aquatic ecosystem dynamics due to their simple structure and rapid growth.
    • The experiment used Lemna to assess the toxicity of the wastewater.
Variants and Related Words
  • Duckweed (n): The common name for plants in the genus and related genera.
  • Lemnaceae (n): The botanical family name to which the genus belongs.
  • Frond (n): The leaf-like, floating structure that makes up the plant body of .
Synonyms
  • Duckweed
  • Water lentil (a less common name for certain species)
Notes on Meaning

The word "lemna" has a single, precise meaning in English: it refers exclusively to this specific genus of aquatic plants. It does not have idiomatic meanings or phrasal verbs associated with it.

Noun
  1. minute aquatic herbs floating on or below the water surface of still water consisting of a leaflike frond or plant body and single root

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