- 1. n. pl. An extensive artificial group of invertebrates, having all the parts arranged radially around the vertical axis of the body, and the various organs repeated symmetrically in each ray or spheromere. Source: opted
- 2. An extensive artificial group of invertebrates, having all the parts arranged radially around the vertical axis of the body, and the various organs repeated symmetrically in each ray or spheromere. Note: It includes the coelenterates and the echinoderms. Formerly, the group was supposed to be a natural one, and was considered one of the grand divisions of the animal kingdom. Source: webster
- 3. An extensive artificial group of invertebrates, having all theparts arranged radially around the vertical axis of the body, and thevarious organs repeated symmetrically in each ray or spheromere. Source: adambom
- 4. n. pl. An extensive artificial group of invertebrates, having all the parts arranged radially around the vertical axis of the body, and the various organs repeated symmetrically in each ray or spheromere. Source: ecdict
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