from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. See nematode.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. An invertebrate animal of the phylum Nematoda. Many species of roundworms are parasites.

from the GNU version of the Collaborative International Dictionary of English

  • n. A nematoid worm.

from The Century Dictionary and Cyclopedia

  • n. An intestinal parasitic worm, Ascaris lumbricoides, several inches long, infesting the human intestine: distinguished from the similar but much smaller pinworms or threadworms, and from the larger and more formidable flatworms, jointworms, or tapes.
  • n. Hence Any member of the class Nematelmintha; a nematoid worm: distinguished from cestoid and trematoid worms, or tapeworms and flukes.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. infections of the skin or nails caused by fungi and appearing as itching circular patches
  • n. unsegmented worms with elongated rounded body pointed at both ends; mostly free-living but some are parasitic


Sorry, no etymologies found.


  • The roundworm is the most serious buffalo parasite and in untreated calves the small intestine can get packed with worms to the point of complete occlusion.

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  • OK, so they're everywhere, they're huge, and they're spreading the raccoon roundworm, which is blinding and brain damaging everyone! News

  • UK - The health of Great Britain's livestock sector will receive a big boost thanks to a grant to fund research into potential new vaccines for parasitic diseases such as roundworm, tapeworm and fluke.

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  • The most common worm infections are soil-transmitted helminths, such as roundworm, whipworm and hookworm, and schistosomiasis. - latest science and technology news stories

  • The monthly preventative treatment that Lulu receives is effective on heartworm infection and intestinal parasites such as roundworm, hookworm and whipworm.

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  • This little roundworm is the most studied multicellular organism this side of Alpha Centauri -- we know how its 300 neurons are interconnected, and how they link up to the thousand or so cells of its body.

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  • In neuroscience it is the 300 neurons of the roundworm C. elegans that stand in the way of our understanding the huge collections of neurons found in our or any mammal's brain.

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  • Indeed, the prevalence rates of some of these conditions, such as toxocariasis (roundworm) and trichomoniasis (commonly called trich) are as high among African Americans in the U.S. as they are in Nigeria, with more than one million cases in our country.

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  • The eggs of the roundworm Ascaris enter the alimentary tract of a person if raw vegetables or unboiled water are consumed.

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  • In a single sentence, the Book of Books indicates the way to avoid deadly epidemics such as typhoid, cholera, and dysentery, and also how to prevent all sorts of infestations by worms such as the pork tapeworm, the roundworm, the hookworm, and schistosoma bilharzias.

    Modern Science in the Bible


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