Definition

Noun: * A species of aquatic plant: Spirodela polyrrhiza is a small, free-floating aquatic plant, commonly known as greater duckweed or giant duckweed. It is characterized by having several roots (typically 7-21) hanging from each small, oval frond (leaf-like structure). It is found in calm, nutrient-rich freshwater habitats worldwide.

Usage

• is often used in scientific research due to its rapid growth and simple structure.
• In ecology, the presence of can indicate eutrophic water conditions.
• This species is sometimes cultivated in ponds to provide shade and cover for fish.

Examples

• The pond's surface was completely covered by a dense mat of .
• Researchers are studying for its potential in wastewater remediation.
• Compared to other duckweeds, is easily identified by its multiple roots per frond.

Advanced Usage

• In botanical taxonomy, is the type species for the genus within the family Araceae.
• The species name "" is derived from Greek, meaning "many roots," which is its defining morphological feature.

Variants and Related Words

• Common Name: Greater duckweed, Giant duckweed.
• Genus: (a genus of duckweed).
• Family: Araceae (the arum family, which also includes plants like peace lilies and taro).

Synonyms

• Greater duckweed
• Giant duckweed
• (Scientific) (an older, synonymized classification)

Notes on Meaning

The primary meaning of Spirodela polyrrhiza is as the scientific (Latin) binomial name for a specific organism. It does not have idiomatic or phrasal verb uses, as it is a technical term. Its definition is precise and biological.

Noun

1. cosmopolitan except South America and New Zealand and some oceanic islands