A genus of large, heavy-bodied roundworms parasitic in the small intestine; abundant in humans and many other vertebrates. [G. askaris, an intestinal worm]
- A. equorum SYN: Parascaris equorum.
- A. lumbricoides a large roundworm of humans, one of the commonest human parasites (8–12 inches in length); various symptoms such as restlessness, fever, and sometimes diarrhea are attributed to its presence, but usually it causes no definite symptoms; the similar species, A. suum (or A. lumbricoides suum) is very common in swine, but is not readily transmitted to humans, and vice versa; the types are morphologically and immunologically similar but apparently are host-adapted types, considered distinct species or races.

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as·ca·ris 'as-kə-rəs n
1) cap a genus of Ascaridae comprising nematode worms having a 3-lipped mouth, resembling earthworms in size and superficial appearance, and including one (A. lumbricoides) parasitic in the human intestine
2) pl as·car·i·des ə-'skar-ə-.dēz ASCARID

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a genus of parasitic 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 (see also ascariasis).

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As·ca·ris (asґkə-ris) [L., from Gr. askaris] a genus of large intestinal nematode parasites of the family Ascarididae.

Medical dictionary. 2011.

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  • Ascaris — Ascaris. См. аскариды. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

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  • ascaris — ascaride [ askarid ] ou ascaris [ askaris ] n. m. • 1372; lat. ascarida, gr. askaris ♦ Zool. Ver rond (nématodes), dont une espèce, l ascaride lombricoïde, parasite de l intestin de l homme et du cheval, peut atteindre dix à vingt cinq… …   Encyclopédie Universelle

  • Ascaris — Cette page d’homonymie répertorie les différents sujets et articles partageant un même nom. Ascaris est un mot : Ascaris, le nom vernaculaire du parasite Ascaris lumbricoides Ascaris, un genre de nématodes, dont un exemple d espèce est le… …   Wikipédia en Français

  • ascaris — /as keuh ris/, n., pl. ascarides /a skar i deez /. any parasitic roundworm of the genus Ascaris, found in the human small intestine and causing colic and diarrhea. Also, ascarid. [ < NL (Linnaeus), the genus < Gk ascarís intestinal worm; cf.… …   Universalium

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