Pseudocoelomata

plural noun

Pseu·​do·​coelomata

¦sü(ˌ)dō+

in some classifications

: a group comprising lower invertebrates in which there is a body cavity that either lacks a mesodermal lining or has one derived from wandering mesenchymal cells, including rotifers, nematodes, bryozoans, and related forms, and being basically equivalent to Aschelminthes

Word History

Etymology

New Latin, from pseud- + Coelomata

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