tarsometatarsus Syllabification: (tar·so·met·a·tar·sus)Pronunciation: /ˈtärsōˌmetəˈtärsəs/Definition of tarsometatarsus noun (plural tarsometatarsi /-ˈtärsī, -ˌsē/) Zoology a long bone in the lower leg of birds and some reptiles, formed by fusion of tarsal and metatarsal structures. Derivatives tarsometatarsalPronunciation: /-ˈtärsəl/ adjective tarsometatarsus in other Oxford dictionaries Definition of tarsometatarsus in the British & World English dictionary