creatinine
/kɹiːˈæ.təˌniːn/
"creatinine" is a 10-letter English headword indexed on PlainSpell.
The verdict
“creatinine” is uncommon English (frequency #50,447 among 43,570 “C” headwords), classed as a noun. The kind of spelling people second-guess.
- #50,447
- frequency rank, English
- 43,570
- “C” headwords
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A heterocyclic amine, 2-amino-1-methyl-5H-imidazol-4-one, formed by the metabolism of creatine.
| Property | Value |
|---|---|
| Headword | creatinine |
| Language | English |
| Part of speech | Noun |
| IPA | /kɹiːˈæ.təˌniːn/ |
| Letters | 10 |
| Frequency rank | #50,447 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “creatinine” sits in English frequency
Rare enough to double-check
creatinine is uncommon English at frequency #50,447 among 43,570 “C” headwords, classed as anoun, transcribed /kɹiːˈæ.təˌniːn/. Rarity is why readers land here mid-draft. Gloss: "A heterocyclic amine, 2-amino-1-methyl-5H-imidazol-4-one, formed by the metabolism of creatine.".
creatinine has no tracked misspelling variants, since its letter pattern doesn't lend itself to common typo substitutions. This entry stands alone in our confusable dataset, which tends to mean the word is visually distinctive enough to stand on its own.
Etymologically, the entry records: From creatine + -ine, from Ancient Greek κρέας (kréas, “meat”) (genitive κρέατος (kréatos)) + -ine. The correct English form is creatinine, spelled C-R-E-A-T-I-N-I-N-E.
Definition
- 1A heterocyclic amine, 2-amino-1-methyl-5H-imidazol-4-one, formed by the metabolism of creatine.
Etymology
From creatine + -ine, from Ancient Greek κρέας (kréas, “meat”) (genitive κρέατος (kréatos)) + -ine.
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); 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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Using “creatinine”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is C-R-E-A-T-I-N-I-N-E - every other letter order is a misspelling in standard orthography.
- Say it as /kɹiːˈæ.təˌniːn/ (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
Other uncommon English words near this rank
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.