coelenterate
noun [ C ] biology specialized uk/sɪˈlen.tə.reɪt/ us/sɪˈlen.tə.reɪt/
腔肠动物(一种海洋动物,形体简单,有触手,中部为一腔口,如水母、海葵)
a type of sea creature that has a simple body with tentacles and a single opening at the centre, such as a jellyfish or a sea anemone