The scientific classification group (class) that includes all six-legged arthropods, primarily insects, but also some other arthropods like springtails.
From Greek 'hexa-' (six) + 'poda' (feet). This is the formal Linnaean taxonomic name established by Carl Linnaeus and refined by later zoologists.
Hexapoda is so successful as a life strategy that this single class contains over a million described species—more than all vertebrates (animals with backbones) combined, making six-legged body plans absolutely dominant on Earth.
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