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 (nĕm′ə-tōd′, nē′mə-)
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).]

nem′a·tode′ adj.


(ˈnɛməˌtəʊd) or


(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


(ˈnɛm əˌtoʊd)

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.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.nematode - unsegmented worms with elongated rounded body pointed at both endsnematode - 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
Ascaris lumbricoides, common roundworm - intestinal parasite of humans and pigs
Ascaridia galli, chicken roundworm - intestinal parasite of domestic fowl
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
Tylenchus tritici, wheat eel, wheat eelworm, wheatworm - small roundworm parasitic on wheat
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
Dracunculus medinensis, Guinea worm - parasitic roundworm of India and Africa that lives in the abdomen or beneath the skin of humans and other vertebrates


n. nematodo, gusano de la clase Nematoda;
alcoholic ______ alcohólica;
autonomic ______ autonómica;
hepatic ______ hepática.
References in periodicals archive ?
In her fascinating study entitled "West Indians in West Africa, 1808-1880: The African Diaspora in Reverse", Nemata Blyden explains that the impetus for hiring West Indians in the latter part of the early 19th century was to counteract the shortage of European officials employed in British West Africa, and more specifically in Sierra Leone's colonial administration.