Definition of arthropod noun from the Oxford Advanced Learner's Dictionary

 

arthropod

 noun
noun
BrE BrE//ˈɑːθrəpɒd//
 
; NAmE NAmE//ˈɑːrθrəpɑːd//
 
(biology) Invertebrates
 
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an invertebrate animal such as an insect, spider, or crab, that has its skeleton on the outside of its body and has joints on its legs See related entries: Invertebrates Word Originmodern Latin (plural), from Greek arthron ‘joint’ + pous, pod- ‘foot’.
See the Oxford Advanced American Dictionary entry: arthropod