elongated, cylindrical, unsegmented parasitic worms, tapered at both ends, that inhabit the lower gastrointestinal tract of animals. Some species are free-living and non-parasitic. Associated terms: filarial worm – a type of nematode.
parasitic worms that infect the intestine through contaminated water, causing diarrhoea and other problems in the digestive system (the part of the body that deals with food and drink), as well as inflammation of the lungs. Roundworm can be eliminated with medication, but prevention by providing access to clean water is the top priority
unsegmented worms with elongated rounded body pointed at both ends; mostly free-living but some are parasitic
a type of primitive creature that lives inside other animals for most of its existence (lungworms are also a type of roundworm)
A group of worms that includes many of the major human parasites.
A parasitic worm resembling round spaghetti that may cause illness, particularly in young, old or weakened cats.
A large white worm that lives for six months to three years in the human intestine, with the female laying a quarter of a million eggs a day. Eggs find their way into the mouths of others, hatch to form larvae, and migrate through the body causing allergy-type reactions before settling down for good in the intestines. They occur worldwide, but they are most common in tropical and subtropical countries. Roundworms are primitive worms of variable size that may be free living or parasitic, and are of the class Nematoda. They can be both parasitic and free living with muscles running the length of their bodies.
A parasitic worm of the class Nematoda capable of causing illness.