English noun: class Echinoidea | |||
| 1. | class Echinoidea (animal) sea urchins and sand dollars | ||
| Synonyms | Echinoidea | ||
| Broader (hypernym) | class | ||
| Member holonym | Exocycloida, order Exocycloida, order Spatangoida, sea urchin, Spatangoida | ||
| Member meronym | Echinodermata, phylum Echinodermata | ||