peroneus tertius

/pɛ.ɹə(ʊ)ˌniː.əs ˈtɜː.ti.əs/

//pɛ.ɹə(ʊ)ˌniː.əs ˈtɜː.ti.əs// noun

Detailed reference entry for the English word "peroneus-tertius", 16-letters, with pronunciation in International Phonetic Alphabet notation, etymology traced through Germanic and Romance roots where applicable, common misspelling variants catalogued from Wiktionary, and usage frequency ranked against an open word-frequency list covering the top 100,000 English words. PlainSpell covers English, Spanish, Portuguese, French, and German spelling with confusable-pair detection that highlights visually and phonetically similar words. This entry for "peroneus-tertius" includes synonyms, antonyms, homophones, and cross-language translation pointers sourced from Wiktionary via the kaikki.org extract. Whether you are verifying the correct spelling of "peroneus-tertius" for academic writing, checking homophone confusion, or exploring etymological origins, this page provides a citation-backed, free reference that requires no sign-up.

The verdict

“peroneus tertius” is outside the top-ranked English vocabulary, used as a noun - the kind of word writers most often double-check.

Unranked
below top-frequency English
16
letters

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) — 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 e...

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Key facts for peroneus tertius
PropertyValue
Headwordperoneus tertius
LanguageEnglish
Part of speechNoun
IPA/pɛ.ɹə(ʊ)ˌniː.əs ˈtɜː.ti.əs/
Letters16
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “peroneus tertius” sits in English frequency

peroneus tertius falls outside the top-100,000 ranked English words, the long-tail zone of technical, archaic, or low-frequency vocabulary, exactly where readers second-guess spellings most.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Spelling & Dictionary Insight

The English entry for peroneus tertius is 16 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /pɛ.ɹə(ʊ)ˌniː.əs ˈtɜː.ti.əs/. It sits outside the most-frequent rank tiers, which is often why uncommon words generate more spelling variants per reader. The dominant gloss from Wiktionary reads: "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 e...".

No misspelling variants are generated for peroneus tertius in our index, suggesting the orthography follows predictable English patterns. It is not paired with a close-neighbour confusable in our dataset, which tends to mean the word is visually distinctive enough to stand on its own.

Etymologically, the entry records: Borrowed from New Latin peroneus tertius, clipping of mūsculus peroneus tertius (“third peroneal muscle”). Root origin matters for spelling because borrowed morphemes (Greek, Latin, Old French, Old English) carry their source-language orthographic conventions into modern English, which is why historical etymology is often the cleanest predictor of whether a cluster like "-ough", "-eau", or "-tion" will appear. For readers arriving here from a spelling check, the authoritative guidance is: the correct English form is peroneus tertius, spelled P-E-R-O-N-E-U-S- -T-E-R-T-I-U-S, and any other sequence of those letters, regardless of how natural it feels, is a misspelling in standard orthography.

Definition

  1. 1
    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.

Etymology

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

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.

Cite this page

Free to reuse with attribution (CC BY-SA). Copy the citation:

PlainSpell, “peroneus tertius, English word data” (May 6, 2026). Derived from Wiktionary (kaikki.org, CC BY-SA) and an open word-frequency list. https://plainspell.com/en/word/peroneus-tertius

Frequently Asked Questions

How do you spell "peroneus tertius"?
"peroneus tertius" is spelled P-E-R-O-N-E-U-S- -T-E-R-T-I-U-S. The IPA pronunciation is /pɛ.ɹə(ʊ)ˌniː.əs ˈtɜː.ti.əs/.
What does "peroneus tertius" mean?
As a noun, "peroneus tertius" means: 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 e...
How do you pronounce "peroneus tertius"?
The IPA (International Phonetic Alphabet) transcription for "peroneus tertius" is /pɛ.ɹə(ʊ)ˌniː.əs ˈtɜː.ti.əs/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "peroneus tertius"?
Borrowed from New Latin peroneus tertius, clipping of mūsculus peroneus tertius (“third peroneal muscle”). See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Using “peroneus tertius”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct English spelling is P-E-R-O-N-E-U-S- -T-E-R-T-I-U-S - every other letter order is a misspelling in standard orthography.
  • Say it as /pɛ.ɹə(ʊ)ˌniː.əs ˈtɜː.ti.əs/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Browse more English words and confusable pairs in the same reference. English words

Nearby English words

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Data Source: Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list