nematoda

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Definition

Proper noun A major phylum of invertebrates, comprising the roundworms. These are unsegmented, cylindrical worms, often microscopic, found in vast numbers in virtually every environment (soil, water, parasites in plants and animals). They are also known as Nematodes.

Usage

The term "Nematoda" is used in formal, scientific contexts (biology, zoology, agriculture, medicine) to refer to the taxonomic group as a whole. * The phylum Nematoda includes both free-living and parasitic species. * Many important plant pathogens belong to Nematoda. * The study of Nematoda is called nematology.

Advanced Usage
  • The singular form "nematode" is used far more frequently than "Nematoda" in both scientific and general contexts to refer to an individual worm or the group informally.
    • A plant-parasitic nematode damaged the crop.
  • "Nematoda" can be used adjectivally in compound forms (e.g., Nematoda species, Nematoda phylum).
Variants and Related Words
  • Nematode (n.): The common term for any member of the phylum Nematoda; a roundworm.
  • Roundworm (n.): A common name for nematodes, referring to their cylindrical, unsegmented body shape.
  • Threadworm (n.): A common name for certain small, thin nematodes, often parasitic.
  • Eelworm (n.): A common name for small nematodes, particularly those that parasitize plants.
Synonyms
  • Roundworms
  • Threadworms (for certain groups)
  • Eelworms (for certain groups)
Related Phrases / Terms
  • Phylum Nematoda: The full taxonomic designation.
  • Nematode infestation: A condition where a host is infected with a large number of nematodes.
  • Nematode parasite: A nematode that lives in or on another organism to its detriment.
Noun
  1. unsegmented worms: roundworms; threadworms; eelworms

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