A genus of parasitic intestinal round worms.
A parasitic genus of nematode worms. A. lumbricoides, widely distributed throughout the world, is the largest of the human intestinal nematodes—an adult female measures up to 35 cm in length. Eggs, passed out in the stools, may be transmitted to a new host in contaminated food or drink. Larvae hatch out in the intestine and then undergo a complicated migration, via the hepatic portal vein, liver, heart, lungs, windpipe, and pharynx, before returning to the intestine where they later develop into adult worms.
A genus of worms belonging to the family Ascaridae. They inhabit the intestines of vertebrates.