The big toe or hallux; the innermost digit of the foot in vertebrates.
From Latin hallux, the great toe, possibly related to Greek halos 'whole' or from an Etruscan source. The term is used in anatomy to designate the first digit in the foot.
Scientists use hallex when discussing fossilized dinosaur feet and early bird evolution—your big toe is technically called a hallux, connecting you directly to millions of years of vertebrate history!
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