Dictionary.net

type genus of the family Ascaridae: roundworms with a three-lipped mouth

A genus of nematodes of the superfamily ASCARIDOIDEA whose species usually inhabit the intestine.

A genus of intestinal worms, characterized by a long, cylindrical body, extenuated at the extremities; and having a mouth furnished with three tubercules, from which a very short tube is sometimes seen issuing. Formerly, there were reckoned two varieties of the Ascaris-the Ascaris lumbricoides seu gigas hominis, Lumbricus, L. teres hominis, Scolex, (F.) Lombricoide, Ascaride lombricoide, Lombric, or long round worm; and the Ascaris Vermicularis -the Ascaris proper-the thread worm or maw worm. The former is alone included under the genus, at present-a new genus having been formed of the A. vermicularis, under the name Oxyuris. It is the Oxyuris seu Fusaria vermicularis, (F.) Ascaride, A. vermiculaire, Oxyure vermiculaire. A new species of entozoa has been found by Dr. Bellingham, the Ascaris alata.

pl. ascarides. A genus of intestinal worms.

pi., ascarides. A nematode worm belonging to the family Ascaridae, with three long papillae around the oral cavity. They vary from 15 to 25 cm. in length, and their eggs are 40 to 75 ft. long, barrel-shaped, with many warty excrescences in the shell.