Anarthropoda :: Anarthropoda (n. pl.) One of the divisions of Articulata in which there are no jointed legs, as the annelids; -- opposed to Arthropoda..
Anarthropodous :: Anarthropodous (a.) Having no jointed legs; pertaining to Anarthropoda.
Arthropoda :: Arthropoda (n. pl.) A large division of Articulata, embracing all those that have jointed legs. It includes Insects, Arachnida, Pychnogonida, and Crustacea..
Arthropomata :: Arthropomata (n. pl.) One of the orders of Branchiopoda. See Branchiopoda.