metazoan


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Related to metazoan: Myxozoan, Bilaterian

metazoan

(mĕt′ə-zō′ən)
n.
Any of numerous heterotrophic eukaryotic organisms of the kingdom Metazoa, characteristically having a multicellular body with cells differentiated into tissues; an animal.

met′a·zo′al, met′a·zo′an (met′a·zo′ic) adj.

metazoan

A multicellular “animal”.

metazoan

any animal of the group Metazoa, whose bodies are multicellular, as distinct from the PROTOZOANS where the bodies are unicellular. Sponges (see PARAZOAN).are the only nonprotozoan group excluded from the Metazoa. Most metazoans (except COELENTERATES) have a three-layered body structure with an outer ECTODERM, a middle MESODERM and an inner ENDODERM.

metazoan

member of the zoological division of Metazoa.
References in periodicals archive ?
And if a choice had to be made now, we would have to conclude, I think, that the mean and maximum for at least some types of metazoan complexity increased over the Phanerozoic, although not consistently and in some perhaps not lately.
Metazoan parasites were observed in the siphon epithelium of 35% of the geoducks sampled in this study (Fig.
The evolution of metazoan [alpha]-carbonic anhydrases and their roles in calcium carbonate biomineralization.
It is intriguing to think that some metazoan species found in normal marine conditions possibly could adapt to hypersaline, hyperdense, hyperchemical brine pools, but it is unlikely," Bernhard said.
We know that the process of aging is the consequence of programmed cellular events and that this too results in the demise of the metazoan organism.
Non Parametric Correlation analyses (Spearman rho) were used to establish relationship amongst the abundance of metazoan parasites.
Stromatoporoids, corals and bryozoans became the major contributors to metazoan reefs.