noun \ˈne-mə-ˌtōd\

Definition of NEMATODE

:  any of a phylum (Nematoda or Nemata) of elongated cylindrical worms parasitic in animals or plants or free-living in soil or water —called also roundworm

Origin of NEMATODE

ultimately from Greek nēmat-, nēma
First Known Use: 1865


noun    (Concise Encyclopedia)

Nematode (Ascaris lumbricoides)—Javier Palaus Soler/Ostman Agency

Any of more than 15,000 named and many more unnamed species of worms in the class Nematoda (phylum Aschelminthes). Nematodes include plant and animal parasites and free-living forms found in soil, freshwater, saltwater, and even vinegar and beer malts. They are bilaterally symmetrical and usually tapered at both ends. Some species have separate sexes; others are hermaphroditic. They range from microscopic to about 23 ft (7 m) long. Nematode parasites can occur in almost any body organ but are most common in the digestive, circulatory, or respiratory system. Hookworms, pinworms, and eelworms are nematodes. See also filarial worm, guinea worm, trichina.

Variants of NEMATODE

nematode or roundworm


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