n. Phylum Echinodermata, Class Asteroidea. A group of active predatory echinoderms arranged with a five-part symmetry.
a soft-bodied marine animal with five arms; related to the sea urchin, sand dollar, sea cucumber and brittle star; sometimes called a starfish (but it is not a fish)
An invertebrate animal, related to sea urchins and sand dollars, with a star-shaped body. Many species of sea star have five points; some have more.