† mesometatarsen. [ < meso-comb. form + metatarsen.] ZoologyObsoleterare the middle metatarsal bone of the foot of a bird.
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1854 R. OwenStruct. Skeleton & Teeth in Orr's Circle Sci.: Org. Nature I. 225 There are three calcaneal processes: one, called the ‘entocalcaneal’,..a second, called the ‘mesocalcaneal’, from the intercondyloid tract and the mesometatarse.