diol
"diol" is a 4-letter English headword indexed on PlainSpell.
The verdict
“diol” is uncommon English (frequency #89,299 among 3,470 “D” headwords), classed as a noun. The kind of spelling people second-guess.
- #89,299
- frequency rank, English
- 3,470
- “D” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - any organic compound having two hydroxy functional groups
Corpus desk
Index EN-diol · diol · English
diol · rank #89,299 · 0 variants · 0 confusables
- FREQ-RARE #89,299
- LEN-MID 4 letters
- VOW-2 2 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 3,470
- PHOTO-FINISH disses
Nearest frequency peer: disses (+2 rank slots)
Read with this headword: Spelling guide for this pattern
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.
Long-tail ranks near “diol”
Sparse band: bars invert rank so rarer forms read shorter
- dess
dess
10,711 corpus weight
- Devdas
Devdas
10,710 corpus weight
- Diemen
Diemen
10,706 corpus weight
- diol
diol
10,702 corpus weight
- disses
disses
10,700 corpus weight
- doujin
doujin
10,693 corpus weight
What this shows Long-tail view: where “diol” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | diol |
| Language | English |
| Part of speech | Noun |
| Letters | 4 |
| Frequency rank | #89,299 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “diol” in English
Rare enough to double-check
diol is uncommon English at frequency #89,299 among 3,470 “D” headwords, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "any organic compound having two hydroxy functional groups".
The misspelling generator found no plausible variants for diol, a straightforward case of a spelling with little room for common typos. No close-neighbour confusable shows up for this headword in our dataset, suggesting its spelling stands apart enough that readers rarely confuse it with something else.
Etymologically, the entry records: From di- + -ol. The correct English form is diol, spelled D-I-O-L.
Definition
- 1any organic compound having two hydroxy functional groups
Etymology
From di- + -ol.
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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Similar English words by spelling shape
Same letter count and similar misspelling depth for "diol", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 4 letters (nearest by frequency rank).