peroneus tertius

UK/pɛ.ɹə(ʊ)ˌniː.əs ˈtɜː.ti.əs/UK/pɛ.ɹə(ʊ)ˌniː.əs ˈtɜː.ʃi.əs/UK/pɛ.ɹə(ʊ)ˌniː.əs ˈtɜː.ʃəs/US/ˌpɛɹ.əˌni.əs ˈtɝ.ʃi.əs/

noun

A small muscle of the leg, sometimes absent, that arises from the lower portion of the fibula, inserts on to the dorsal surface of the base of the fifth metatarsal bone, and acts to dorsiflex and evert the foot.

Similar
fibularis tertius
OriginNew Latin peroneus tertius →
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Meanings

nounperoneus tertius (plural peronei tertii)

plural peronei tertii · alternative peronaeus tertius

  1. anatomyA small muscle of the leg, sometimes absent, that arises from the lower portion of the fibula, inserts on to the dorsal surface of the base of the fifth metatarsal bone, and acts to dorsiflex and evert the foot.

    Synonyms: fibularis tertius

Synonyms & antonyms

nounA small muscle of the leg, sometimes absent, that arises from the lower portion of the fibula, inserts on to the dorsal surface of the base of the fifth metatarsal bone, and acts to dorsiflex and evert the foot.

Similar
fibularis tertius
Also see
fibularis tertius

Origin

  1. New Latinperoneus tertius
  2. Englishperoneus tertius

Borrowed from New Latin peroneus tertius, clipping of mūsculus peroneus tertius (“third peroneal muscle”).

More words from New Latin

Full word history & related roots →

Translations

Chinese Mandarin 第三腓骨肌
  • 第三腓骨肌 (dìsān féigǔjī)muscle
Cite this entry
APA

peroneus tertius. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/peroneus%20tertius

MLA

“peroneus tertius.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/peroneus%20tertius. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “peroneus tertius,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/peroneus%20tertius.

Source: peroneus tertius on Wiktionary, CC BY-SA 4.0.