Worms, in particular the five groups of parasitic worms: Monogeneans (flukes), Digeneans (flukes, schistosomes), Cestodes (tapeworms), Nematodes (roundworms) and Acanthocephalans (spiny-headed worms).

Parasitic worms of the phylum platyhelminthes including digenetic flukes (class Trematoda, e.g., Schistosoma spp.) and tapeworms (class Cestoidea, e.g., Taenia solium, pork tapeworm).

Parasitic worms, especially internal parasites of man and animals.

A variety of wormlike animals.

See Helminth.