nematode worm
Học thuậtThân thiện
Definition
Noun: A nematode worm is a type of unsegmented worm with an elongated, cylindrical body that is typically rounded and pointed at both ends. While many nematode worms are free-living in soil or water, a significant number are parasitic, living in plants, animals, or humans.
Examples of Usage
- The soil sample was teeming with microscopic nematode worms.
- The veterinarian diagnosed the infection as being caused by a parasitic nematode worm.
- Studying the life cycle of a nematode worm is fundamental in parasitology.
Advanced Usage
- "Nematode worm" as a model organism: The species , a free-living nematode worm, is a crucial model organism in biological and genetic research.
- The development of every cell in the nematode worm C. elegans has been mapped.
- In agricultural contexts, the term often refers to plant-parasitic species that damage crops.
- The farmer treated the field to control root-knot nematode worms.
Variants and Related Words
- Nematode (n): The more common and precise scientific term; "nematode worm" is a descriptive compound of this word.
- The phylum Nematoda includes both parasitic and free-living species.
- Roundworm (n): A common synonym, especially for the larger parasitic species.
- Ascaris is a type of parasitic roundworm.
Synonyms
- Roundworm
- Threadworm (often for smaller species, like )
- Eelworm (primarily in British English, for plant-parasitic nematodes)
Related Phrases
- Nematode infestation: Refers to a harmful population of parasitic nematodes in a host or environment.
- The pine trees suffered from a severe nematode infestation.
- Nematode parasite: Specifically emphasizes the parasitic nature of the worm.
- Hookworms are a common nematode parasite in some regions.
Noun
- unsegmented worms with elongated rounded body pointed at both ends; mostly free-living but some are parasitic