HELMINTHES
Hel*min"thes, n. pl. Etym: [NL., fr. Gr. (Zoöl.)
Definition: 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.
Note: 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.
Source: Webster’s Unabridged Dictionary 1913 Edition