estradiol
/ˌɛs.tɹəˈdaɪˌɔl/
"estradiol" is a 9-letter English headword indexed on PlainSpell.
The verdict
“estradiol” has 13 generated spelling variants in the English index at frequency #40,236. The variants make it a useful spelling check.
- #40,236
- frequency rank, English
- 18,836
- “E” headwords
- 13
- tracked misspellings
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A natural estrogenic hormone that is a phenolic alcohol estra-1,3,5-triene-3,17-diol (C₁₈H₂₄O₂) secreted chiefly by the ovaries of all vertebrates, that is a major and the most potent of the natura...
| Property | Value |
|---|---|
| Headword | estradiol |
| Language | English |
| Part of speech | Noun |
| IPA | /ˌɛs.tɹəˈdaɪˌɔl/ |
| Letters | 9 |
| Frequency rank | #40,236 |
| Misspellings tracked | 13 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “estradiol” sits in English frequency
A misspelling magnet
The generator records 13 spelling variants around estradiol (IPA /ˌɛs.tɹəˈdaɪˌɔl/), anoun. Corpus frequency is #40,236 among 18,836 “E” headwords. Dominant gloss: "A natural estrogenic hormone that is a phenolic alcohol estra-1,3,5-triene-3,17-diol (C₁₈H₂₄O₂) secreted chiefly by the ovaries of all vertebrates, that is a major and the most potent of the natura...".
Our generated misspelling index lists 13 likely wrong-spelling variants for estradiol, with forms such as "esrtadiol", "esstradiol", and "estardiol". Each of these forms differs from the correct spelling by one small edit: a doubled letter, a dropped silent letter, or a substituted vowel. It is not paired with a close-neighbour confusable in our dataset, since nothing in our dataset looks or sounds close enough to cause mix-ups.
Etymologically, the entry records: Internationalism. From estratriene (“estra(triene)”) + diol. By surface analysis, estra- + di- + -ol. The correct English form is estradiol, spelled E-S-T-R-A-D-I-O-L.
Definition
- 1A natural estrogenic hormone that is a phenolic alcohol estra-1,3,5-triene-3,17-diol (C₁₈H₂₄O₂) secreted chiefly by the ovaries of all vertebrates, that is a major and the most potent of the naturally occurring estrogens; the semisynthetic esterified compound is used medicinally to treat estrogen deficiency and breast cancer.
Etymology
Internationalism. From estratriene (“estra(triene)”) + diol. By surface analysis, estra- + di- + -ol.
This word in other languages
Common misspellings
Also misspelled as:
- esrtadiol
- esstradiol
- estardiol
- estraddiol
- estradilo
- estradioll
- estradoil
- estraidol
- estrdaiol
- estrradiol
- esttradiol
- etsradiol
- setradiol
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of estradiol - measured in single-character edits (insert, delete, or substitute a letter). Larger bars are easier to catch; one-edit slips are the sneakiest.
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
How do you spell "estradiol"?
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Is PlainSpell free to use?
Using “estradiol”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is E-S-T-R-A-D-I-O-L - every other letter order is a misspelling in standard orthography.
- Say it as /ˌɛs.tɹəˈdaɪˌɔl/ (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
Same frequency band
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.