{ ‖ } n. pl. [ NL., fr. Gr. &unr_; within + &unr_;, &unr_;, worm. ] (Zoöl.) Intestinal worms. See Helminthes. [ 1913 Webster ]

‖n. pl. [ NL., fr. Gr. &unr_;, &unr_;, a worm. ] (Zool.) One of the grand divisions or branches of the animal kingdom. It is a large group including a vast number of species, most of which are parasitic. Called also Enthelminthes, Enthelmintha. [ 1913 Webster ]

☞ The following classes are included, with others of less importance: Cestoidea (tapeworms), Trematodea (flukes, etc.), Turbellaria (planarians), Acanthocephala (thornheads), Nematoidea (roundworms, trichina, gordius), Nemertina (nemerteans). See Plathelminthes, and Nemathelminthes. [ 1913 Webster ]

{ ‖‖, prop. n. pl. [ NL. See Nemato-, and Helminthes. ] (Zool.) An order of helminths, including the Nematoidea and Gordiacea; the roundworms. [ Written also Nematelminthea. ] [ 1913 Webster ]

‖n. pl. [ NL. ] (Zool.) Same as Platyelminthes; -- an older term. [ 1913 Webster +PJC ]