azolla
/ə'zoulə/
Definition
- Noun:
- A genus of aquatic ferns: "Azolla" refers to a genus of small, free-floating freshwater ferns. These plants are often found on the surface of still or slow-moving water bodies like ponds and rice paddies.
- A plant with ecological significance: Azolla is notable for its symbiotic relationship with nitrogen-fixing cyanobacteria, which allows it to enrich its environment with nitrogen, making it valuable as a natural fertilizer.
Examples of Usage
- Noun:
- The surface of the pond was covered with a green mat of Azolla.
- Farmers in Asia sometimes use Azolla as a biofertilizer in rice fields.
Advanced Usage
- "Azolla event": A term used in paleoclimatology referring to a hypothesized period in the Eocene epoch when massive blooms of Azolla in the Arctic Ocean may have contributed to global cooling by drawing down atmospheric carbon dioxide.
- Scientists study the Azolla event to understand past climate change.
Variants and Related Words
- Azollaceae (n): The family name sometimes used to classify the Azolla genus.
- Some botanists place the genus Azolla in the family Azollaceae.
Synonyms
- Mosquito fern: A common name for Azolla, derived from its ability to cover water surfaces and potentially prevent mosquito breeding.
- Fairy moss: Another common name for Azolla.
- Water fern: A general descriptive term.
Related Phrases
(Note: As "Azolla" is a specific scientific noun, it does not have phrasal verbs. Common names are listed as synonyms above.)
Related Idioms
(Note: There are no common idioms specifically featuring the word "Azolla.")
Noun
-
a genus of fern sometimes placed in its own family Azollaceae
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