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 | ||