of or relating to a substance that is useful in the suppression of nausea or vomiting. noun. 2. any such substance. Origin of antiemetic. anti- + emetic.
Sea anemones are a group of water-dwelling, predatory animals of the order Actiniaria. They are named for the anemone, a terrestrial flower.Sea anemones are classified in the phylum Cnidaria, class Anthozoa, subclass Hexacorallia. sea anemone is a sessile polyp attached at the bottom to the surface beneath it by an adhesive foot, called a basal disc, with a column-shaped body ending in an oral disc.
Invertebrates are a broad collection of animal groups (they do not belong to a single subphylum like the vertebrates) all of which lack a backbone. Some (not all) of the animal groups that are invertebrates include: 1  Sponges (Phylum Porifera). 2  Jellyfish, hydras, sea anemones, corals (Phylum Cnidaria).nvertebrates are a broad collection of animal groups (they do not belong to a single subphylum like the vertebrates) all of which lack a backbone. Some (not all) of the animal groups that are invertebrates include: 1  Sponges (Phylum Porifera). 2  Jellyfish, hydras, sea anemones, corals (Phylum Cnidaria).