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Nematoda 線蟲綱; 線蟲類 線蟲綱; 線蟲類 Nematoda n 1: unsegmented worms: roundworms; threadworms; eelworms [synonym: {Nematoda}, {phylum Nematoda}, {Aschelminthes}, {phylum Aschelminthes}] Nematoidea \Nem`a*toi"de*a\, prop. n. pl. [NL., fr. Gr. nh^ma,
nh`matos, thread -oid.] (Zool.) A phylum of worms, having a long, round, and generally smooth body; the roundworms. Called also {Nematodea}, and more commonly {Nematoda}. Formerly, it was classed as a taxonomic order. [1913 Webster PJC] Note: The trichina, stomach worm, and pinworm of man belong to this group. See also {Vinegar eel}, under {Vinegar}, and {Gapeworm}. [1913 Webster] Nematoda \Nem`a*to"da\, prop. n. pl. (Zool.) A phylum of worms, having a long, round, and generally smooth body; the roundworms. They are mostly parasites, in plants and animals, but some are free-living in soil or water. Also called {Nematoidea}. [1913 Webster PJC]
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