ECHINOIDEA

Pronunciation (US): (GB):

Meaning:

Sea urchins and sand dollars

Synonyms:

class Echinoidea; Echinoidea

Classified under:

Nouns denoting animals

Hypernyms ("Echinoidea" is a kind of...):

class ((biology) a taxonomic group containing one or more orders)

Meronyms (members of "Echinoidea"):

sea urchin (shallow-water echinoderms having soft bodies enclosed in thin spiny globular shells)

Exocycloida; order Exocycloida (flat sea urchins)

order Spatangoida; Spatangoida (heart-shaped sea urchins)

Holonyms ("Echinoidea" is a member of...):

Echinodermata; phylum Echinodermata (radially symmetrical marine invertebrates including e.g. starfish and sea urchins and sea cucumbers)