A division of the Invertebrata, nearly equal to the Articulata. It provides the Arthoropoda and Anarthropoda. By some zoölogists it's put on the previous only.
In some systems of zoölogical classification, a phrase put on invertebrate creatures which display annelism or annulism: around similar to the Cuvierian Articulata, or the modern-day Vermes as well as Arthropoda, but used in combination with great and differing latitude of signification.
A name distributed by Huxley (1869) to a subkingdom of creatures comprising the Crustacea, Arachnida, Myriapoda, Insecta, Chœtognatha, and Annelida, or crustaceans, spiders, centipeds, true insects, true worms, and some other Vermes.