The bone in a bird's leg corresponding to the tibia, fused at the lower end with some bones of the tarsus.
- ‘The tibia and fibula are fused, especially distally, to form a single element, the tibiotarsus.’
- ‘The third muscle to consider is a superficial muscle that lies along the anterior side of the tibiotarsus.’
- ‘The larger birds in Nova Scotia and the smaller ones in Utah differ by only 2 mm in average length of the tibiotarsus.’
- ‘They collected males and females during prelaying, laying, and postlaying and dissected femora and tibiotarsi from each bird.’
- ‘It springs or rushes out of ambush, opening its jaws quickly and allowing them to slam together hard enough to snap the relatively fragile tibiotarsus of the bird.’
Late 19th century: blend of tibia and tarsus.