01 n. pl. An extensive group of worms which have the body covered externally with vibrating cilia. It includes the Rhabdocœla and Dendrocœla. Formerl…
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1.
An extensive group of worms which have the body covered externally with vibrating cilia. It includes the Rhabdocœla and Dendrocœla. Formerly, the nemerteans were also included in this group.(Zool.)