noun🔗Share극피동물An 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. "수족관을 방문했을 때, 제 딸은 불가사리가 다섯 개의 팔과 가시가 있는 표면을 가진 극피동물이라는 것을 알게 되었습니다.animalbiologyoceannaturescienceChat with AIVocabulary GamePractice Reading