WordReference Random House Unabridged Dictionary of American English © 2026
per•o•ne•us
(per′ə nē′əs),USA pronunciation n., pl. -ne•i (-nē′ī).USA pronunciation [Anat.]
- any of several muscles on the outer side of the leg, the action of which assists in extending the foot and in turning it outward.
- Neo-Latin: literally, of the fibula, equivalent. to peronē the fibula (see peroneal) + -us -ous
- 1695–1705