arthropod

1. N any invertebrate of the phylum Arthropoda, having jointed limbs, a segmented body, and an exoskeleton made of chitin. The group includes the crustaceans, insects, arachnids, and centipedes 節(jié)肢動物; 節(jié)肢動物門的無脊椎動物，包括甲殼綱、昆蟲綱、蛛形綱和蜈蚣亞綱等