Acoelomata
plural noun
Acoe·lo·ma·ta
| \ ¦ā-sē-ˈlō-mə-tə\
Definition of Acoelomata
in some classifications
: the Metazoa lacking a true body cavity regarded as a natural group (1) including the sponges and coelenterates and often the lower worms or (2) including only certain worms
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