regio
"regio" is a 5-letter English headword indexed on PlainSpell.
The verdict
“regio” is uncommon English (frequency #84,673 among 21,470 “R” headwords), classed as a noun. The kind of spelling people second-guess.
- #84,673
- frequency rank, English
- 21,470
- “R” headwords
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Any large area of a planet or moon that is strongly differentiated from neighbouring areas by colour or albedo.
| Property | Value |
|---|---|
| Headword | regio |
| Language | English |
| Part of speech | Noun |
| Letters | 5 |
| Frequency rank | #84,673 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “regio” sits in English frequency
Rare enough to double-check
regio is uncommon English at frequency #84,673 among 21,470 “R” headwords, classed as anoun. Rarity is why readers land here mid-draft. 2 senses are on record.
regio has no tracked misspelling variants, and the word's spelling is regular enough that our generator found nothing worth flagging. Our dataset records no confusable match here, which tends to mean the word is visually distinctive enough to stand on its own.
Etymologically, the entry records: Learned borrowing from Latin regiō. Doublet of region. The correct English form is regio, spelled R-E-G-I-O.
Definition
- 1Any large area of a planet or moon that is strongly differentiated from neighbouring areas by colour or albedo.
- 2A district of a city.
Etymology
Learned borrowing from Latin regiō. Doublet of region.
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 “regio”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is R-E-G-I-O - every other letter order is a misspelling in standard orthography.
- 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.