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phylum or class of elongated wormlike parasites that live in the intestines of vertebrates: spiny-headed worms

phylum or class of elongated wormlike parasites that live in the intestines of vertebrates: spiny-headed worms

A phylum of parasitic worms, closely related to tapeworms and containing two genera: Moniliformis, which sometimes infects man, and Macracanthorhynchus, which infects swine.

An order of nematode-like entozoa without alimentary canal. Various species are parasites, in the adult stage, of vertebrate animals, the larval stage being passed in invertebrates. They are only exceptionally parasitic in man.

An order of worms, including Echinorhynchus.