Relating to or characteristic of arthropods; having the structural or functional traits typical of members of the phylum Arthropoda.
From Arthropoda (the phylum) + -al (forming adjectives). This adjectival form allows descriptive usage of the characteristics that define the arthropod body plan.
When scientists describe something as 'arthropodal,' they're invoking 500 million years of evolutionary success—that jointed limb design has been refined and adapted to thrive in nearly every environment on the planet.
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