erythropoietin
/ɪˌɹɪθɹəˈpɔɪ.ɪtɪn/
"erythropoietin" is a 14-letter English headword indexed on PlainSpell.
The verdict
“erythropoietin” is uncommon English (frequency #88,313 among 18,836 “E” headwords), classed as a noun. The kind of spelling people second-guess.
- #88,313
- frequency rank, English
- 18,836
- “E” headwords
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A glycoprotein hormone that functions as a cytokine for erythrocyte precursors in bone marrow.
| Property | Value |
|---|---|
| Headword | erythropoietin |
| Language | English |
| Part of speech | Noun |
| IPA | /ɪˌɹɪθɹəˈpɔɪ.ɪtɪn/ |
| Letters | 14 |
| Frequency rank | #88,313 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “erythropoietin” sits in English frequency
Rare enough to double-check
erythropoietin is uncommon English at frequency #88,313 among 18,836 “E” headwords, classed as anoun, transcribed /ɪˌɹɪθɹəˈpɔɪ.ɪtɪn/. Rarity is why readers land here mid-draft. Gloss: "A glycoprotein hormone that functions as a cytokine for erythrocyte precursors in bone marrow.".
The misspelling generator found no plausible variants for erythropoietin, which points to an orthography that plays by predictable English rules. No confusable counterpart is on file for this word, a sign it's visually distinctive enough not to be mixed up with another word.
Etymologically, the entry records: From Ancient Greek ἐρυθρός (eruthrós, “red”) and ποιητής (poiētḗs, “creator, maker”) and -in. The correct English form is erythropoietin, spelled E-R-Y-T-H-R-O-P-O-I-E-T-I-N.
Definition
- 1A glycoprotein hormone that functions as a cytokine for erythrocyte precursors in bone marrow.
Etymology
From Ancient Greek ἐρυθρός (eruthrós, “red”) and ποιητής (poiētḗs, “creator, maker”) and -in.
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 “erythropoietin”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is E-R-Y-T-H-R-O-P-O-I-E-T-I-N - every other letter order is a misspelling in standard orthography.
- Say it as /ɪˌɹɪθɹəˈpɔɪ.ɪtɪn/ (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.