noun🔗ShareÉchinodermeAn animal of the phylum Echinodermata, comprising radially symmetric, spiny-skinned marine animals including seastars, sea urchins, sea cucumbers, crinoids, and sand dollars."While visiting the aquarium, my daughter learned that a starfish is an echinoderm with five arms and a spiny surface. "En visitant l'aquarium, ma fille a appris qu'une étoile de mer est un échinoderme avec cinq bras et une surface épineuse.animalbiologyoceannaturescienceChat with AIVocabulary GamePractice Reading
