Definition of peroneus tertius in English:

peroneus tertius


(also peronaeus tertius)
Anatomy Zoology
  • A small muscle of the leg, sometimes absent, that arises from the fibula, inserts on to the fifth metatarsal bone, and acts to dorsiflex and evert the foot.


peroneus tertius

/pɛrə(ʊ)ˌniːəs ˈtəːtɪəs/ /pɛrə(ʊ)ˌniːəs ˈtəːʃ(ɪ)əs/


Mid 18th century. From post-classical Latin peroneus tertius from peroneus + classical Latin tertius third.