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单词 trematodea
释义

Trematodea

Related to Trematodea: Cestodes

Trem`a`to´de`a


n. pl.1.(Zool.) 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.
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更新时间：2026/8/14 6:06:27