Spheromere
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Radiata — Ra di*a ta (r[=a] d[i^]*[=a] t[.a]), n. pl. [NL., fr. radiatus, p. p. See {Radiate}.] (Zo[ o]l.) An extensive artificial group of invertebrates, having all the parts arranged radially around the vertical axis of the body, and the various organs… … The Collaborative International Dictionary of English