a large phylum of invertebrate animals that includes insects, spiders, crustaceans, and their relatives. They have a segmented body, an external skeleton, and jointed limbs, and are sometimes placed in different phyla.
Origin:
modern Latin (plural), from Greek arthron 'joint' + pous, pod- 'foot'
Arthropoda in other Oxford dictionaries
Definition of Arthropoda in the US English dictionary
