hydroquinone
/ˌhaɪdɹəˈkwɪnəʊn/
"hydroquinone" is a 12-letter English headword indexed on PlainSpell.
The verdict
“hydroquinone” is uncommon English (frequency #94,973 among 23,837 “H” headwords), classed as a noun. The kind of spelling people second-guess.
- #94,973
- frequency rank, English
- 23,837
- “H” headwords
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - The diphenol para-dihydroxy benzene, used as a mild reducing agent in photographic developing; isomeric with catechol and resorcinol.
| Property | Value |
|---|---|
| Headword | hydroquinone |
| Language | English |
| Part of speech | Noun |
| IPA | /ˌhaɪdɹəˈkwɪnəʊn/ |
| Letters | 12 |
| Frequency rank | #94,973 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “hydroquinone” sits in English frequency
Rare enough to double-check
hydroquinone is uncommon English at frequency #94,973 among 23,837 “H” headwords, classed as anoun, transcribed /ˌhaɪdɹəˈkwɪnəʊn/. Rarity is why readers land here mid-draft. Gloss: "The diphenol para-dihydroxy benzene, used as a mild reducing agent in photographic developing; isomeric with catechol and resorcinol.".
Our edit-distance generator produced no likely misspellings for hydroquinone, a straightforward case of a spelling with little room for common typos. It is not paired with a close-neighbour confusable in our dataset, since no other headword is close enough in sound or shape to pair with it.
Etymologically, the entry records: From hydro- + quinone. The correct English form is hydroquinone, spelled H-Y-D-R-O-Q-U-I-N-O-N-E.
Definition
- 1The diphenol para-dihydroxy benzene, used as a mild reducing agent in photographic developing; isomeric with catechol and resorcinol.
Etymology
From hydro- + quinone.
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 “hydroquinone”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is H-Y-D-R-O-Q-U-I-N-O-N-E - every other letter order is a misspelling in standard orthography.
- Say it as /ˌhaɪdɹəˈkwɪnəʊn/ (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.