Word Study
arthropoda
CIDE DICTIONARY
arthropoda, n. pl. [NL., fr. Gr. 'a`rqron joint + -poda.].
A large division of Articulata, embracing all those that have jointed legs. It includes Insects, Arachnida, Pychnogonida, and Crustacea. [1913 Webster]
For further exploring for "arthropoda" in Webster Dictionary Online