square kilometre
"square-kilometre" is a 15-letter English headword indexed on PlainSpell.
The verdict
“square kilometre” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 16
- letters
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Standard unit of area, symbol km², equal to the area of a square whose sides are one kilometre long; 10⁶ square metres.
| Property | Value |
|---|---|
| Headword | square kilometre |
| Language | English |
| Part of speech | Noun |
| Letters | 16 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “square kilometre” sits in English frequency
Rare enough to double-check
square kilometre is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "Standard unit of area, symbol km², equal to the area of a square whose sides are one kilometre long; 10⁶ square metres.".
The misspelling generator found no plausible variants for square kilometre, and the word's spelling is regular enough that our generator found nothing worth flagging. We don't track a confusable pairing for this entry, since no other headword is close enough in sound or shape to pair with it.
This entry carries no recorded etymology, so its spelling is easiest to reason about phoneme by phoneme, absent a documented history. The correct English form is square kilometre, spelled S-Q-U-A-R-E- -K-I-L-O-M-E-T-R-E.
Definition
- 1Standard unit of area, symbol km², equal to the area of a square whose sides are one kilometre long; 10⁶ square metres.
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). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
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Using “square kilometre”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is S-Q-U-A-R-E- -K-I-L-O-M-E-T-R-E - every other letter order is a misspelling in standard orthography.
- Browse more English words and confusable pairs in the same reference. English words
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.