TREMATODEA
Trem`a*to"de*a, n. pl. Etym: [NL., from Gr. (Zoöl.)
Definition: An extensive order of parasitic worms. They are found in the
internal cavities of animals belonging to all classes. Many species
are found, also, on the gills and skin of fishes. A few species are
parasitic on man, and some, of which the fluke is the most important,
are injurious parasites of domestic animals. The trematodes usually
have a flattened body covered with a chitinous skin, and are
furnished with two or more suckers for adhesion. Most of the species
are hermaphrodite. Called also Trematoda, and Trematoidea. See Fluke,
Tristoma, and Cercaria.
Source: Webster’s Unabridged Dictionary 1913 Edition