Origin and Etymology of metatarsus
First Known Use: 1676
Medical Definition of metatarsus
: the part of the human foot or of the hind foot in quadrupeds that is between the tarsus and phalanges, contains when all the digits are present (as in humans) five more or less elongated bones but is modified in many animals with loss or reduction of some bones or fusing of others, and in humans forms the instep
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