roundworm, any worm of the class Nematoda, including Ancylostoma duodenale, Ascaris lumbricoides, Enterobius vermicularis, and Strongyloides stercoralis.
roundworm
roundworm, any worm of the class Nematoda, including Ancylostoma duodenale, Ascaris lumbricoides, Enterobius vermicularis, and Strongyloides stercoralis.