troponin
"troponin" is a 8-letter English headword indexed on PlainSpell.
The verdict
“troponin” is uncommon English (frequency #83,837 among 3,151 “T” headwords), classed as a noun. The kind of spelling people second-guess.
- #83,837
- frequency rank, English
- 3,151
- “T” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A heterotrimeric regulatory protein complex found in the thin filaments of striated muscle fibers, including both skeletal and cardiac muscle, that controls calcium-mediated muscle contraction.
Corpus desk
Index EN-troponin · troponin · English
troponin · rank #83,837 · 0 variants · 0 confusables
- FREQ-RARE #83,837
- LEN-LONG 8 letters
- VOW-3 3 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 3,151
- PHOTO-FINISH Trumpism
Nearest frequency peer: Trumpism (+1 rank slots)
Read with this headword: Spelling guide for this pattern
Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.
Long-tail ranks near “troponin”
Sparse band: bars invert rank so rarer forms read shorter
- treacherous…
treacherously
16,168 corpus weight
- Tremayne
Tremayne
16,167 corpus weight
- tribesman
tribesman
16,166 corpus weight
- troponin
troponin
16,164 corpus weight
- Trumpism
Trumpism
16,163 corpus weight
- Tuchman
Tuchman
16,160 corpus weight
What this shows Long-tail view: where “troponin” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | troponin |
| Language | English |
| Part of speech | Noun |
| Letters | 8 |
| Frequency rank | #83,837 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “troponin” in English
Rare enough to double-check
troponin is uncommon English at frequency #83,837 among 3,151 “T” headwords, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "A heterotrimeric regulatory protein complex found in the thin filaments of striated muscle fibers, including both skeletal and cardiac muscle, that controls calcium-mediated muscle contraction.".
We couldn't generate a plausible misspelling set for troponin, suggesting the orthography follows predictable English patterns. Our confusable-pair dataset has no match for it, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.
Etymologically, the entry records: From tropomyosin. Coined by the Japanese researcher Setsuro Ebashi in 1963.http://jb.oxfordjournals.org/content/vol59/issue4/index.dtl The correct English form is troponin, spelled T-R-O-P-O-N-I-N.
Definition
- 1A heterotrimeric regulatory protein complex found in the thin filaments of striated muscle fibers, including both skeletal and cardiac muscle, that controls calcium-mediated muscle contraction.
Etymology
From tropomyosin. Coined by the Japanese researcher Setsuro Ebashi in 1963.http://jb.oxfordjournals.org/content/vol59/issue4/index.dtl
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
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Similar English words by spelling shape
Same letter count and similar misspelling depth for "troponin", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 8 letters (nearest by frequency rank).