What does the word 'Arthropoda' mean?

The term Arthropoda derives from Greek words: "arthron" meaning jointed and "podos" meaning feet or legs. Thus, Arthropoda literally translates to "jointed legs" or "jointed feet." This name perfectly describes the phylum's defining characteristic—segmented bodies with paired, jointed appendages. Arthropods represent the largest and most diverse animal phylum, including insects, spiders, crustaceans, and centipedes. Their jointed exoskeleton made of chitin provides protection while allowing flexible movement, contributing to their evolutionary success in virtually every habitat on Earth.