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Any of numerous worms of the phylum Nematoda, having unsegmented cylindrical bodies often narrowing at each end, and including free-living species that are abundant in soil and water, and species that are parasites of plants and animals, such as eelworms, pinworms, and hookworms. Also called roundworm.
[From New Latin Nēmatōda, phylum name : nemato- + New Latin -ōda (alteration of -oīdea, from neuter pl. of Greek -oeidēs, -oid).]
(Animals) any unsegmented worm of the phylum (or class) Nematoda, having a tough outer cuticle. The group includes free-living forms and disease-causing parasites, such as the hookworm and filaria. Also called: nematode worm or roundworm
any unsegmented worm of the phylum Nematoda, having an elongated, cylindrical body and often parasitic on animals and plants; a roundworm.
Any of several slender cylindrical worms, usually of tiny size, that live in great numbers in water, soil, plants, and animals. They have a simple structure, with a long hollow gut separated from the body wall by a fluid-filled space. Several nematodes are parasites on animals and humans and cause disease.
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|Noun||1.||nematode - unsegmented worms with elongated rounded body pointed at both ends; mostly free-living but some are parasitic|
worm - any of numerous relatively small elongated soft-bodied animals especially of the phyla Annelida and Chaetognatha and Nematoda and Nemertea and Platyhelminthes; also many insect larvae
Aschelminthes, Nematoda, phylum Aschelminthes, phylum Nematoda - unsegmented worms: roundworms; threadworms; eelworms
Enterobius vermicularis, pinworm, threadworm - small threadlike worm infesting human intestines and rectum especially in children
eelworm - any of various small free-living plant-parasitic roundworms
trichina, Trichinella spiralis - parasitic nematode occurring in the intestines of pigs and rats and human beings and producing larvae that form cysts in skeletal muscles
hookworm - parasitic bloodsucking roundworms having hooked mouth parts to fasten to the intestinal wall of human and other hosts
filaria - slender threadlike roundworms living in the blood and tissues of vertebrates; transmitted as larvae by biting insects