Comp. Anat. Also in Fr.-Eng. form tarso-metatarse. The bone formed by ankylosis of the tarsus and the metatarsus in birds and early reptilian types.
1854. Owen, Skel. & Teeth, in Orrs Circ. Sc. I. Org. Nat., 224. The period at which these several constituents of the tarso-metatarse coalesce is shorter in the birds that can fly than in [the others].
1870. Rolleston, Anim. Life, 18. The fibula never articulates with the tarso-metatarsus.