Cystein
[t͡sʏsteˈiːn]
The verdict
“Cystein” is uncommon German (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency German
- 7
- letters
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - schwefelhaltige Aminosäure, die als Bestandteil vieler Proteine auftritt und besonders in verhornten Zellen, Federn und Haaren vorkommt
Corpus desk
Index DE-cystein · Cystein · German
Cystein · unranked · 0 variants · 0 confusables
- FREQ-UNRANKED Unranked
- LEN-LONG 7 letters
- VOW-3 3 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-THIN "C" thin
- PHOTO-UNK Peer pending
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.
| Property | Value |
|---|---|
| Headword | Cystein |
| Language | German |
| Part of speech | Noun |
| IPA | [t͡sʏsteˈiːn] |
| Letters | 7 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “Cystein” sits in German frequency
Rare enough to double-check
Cystein is uncommon German outside the top frequency list, classed as anoun, transcribed [t͡sʏsteˈiːn]. Rarity is why readers land here mid-draft. Gloss: "schwefelhaltige Aminosäure, die als Bestandteil vieler Proteine auftritt und besonders in verhornten Zellen, Federn und Haaren vorkommt".
Cystein has no tracked misspelling variants, since its letter sequence doesn't invite the usual edit-distance slips. Our dataset records no confusable match here, suggesting its spelling stands apart enough that readers rarely confuse it with something else.
Wiktionary doesn't record an etymology for this headword, so its spelling is best read as a straightforward mapping from sound to letter. The correct German form is Cystein, spelled C-Y-S-T-E-I-N.
Definition
- 1schwefelhaltige Aminosäure, die als Bestandteil vieler Proteine auftritt und besonders in verhornten Zellen, Federn und Haaren vorkommt
This word in other languages
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.
PlainSpell is rendered directly from structured Wiktionary extracts and open word-frequency lists, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 6, 2026. Primary sources: Wiktionary (via kaikki.org) and FrequencyWords.
Frequently Asked Questions
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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.