kilowatt-hour
"kilowatt-hour" is a 12-letter English headword indexed on PlainSpell.
The verdict
“kilowatt-hour” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 13
- letters
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A unit of energy equal to that provided by one kilowatt acting for one hour (3·6 × 10⁶ joules).
Corpus desk
Index EN-kilowatt-hour · kilowatt-hour · English
kilowatt-hour · unranked · 0 variants · 0 confusables
- FREQ-UNRANKED Unranked
- LEN-MEGA 13 letters
- VOW-5 5 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-THIN "K" thin
- PHOTO-UNK Peer pending
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.
| Property | Value |
|---|---|
| Headword | kilowatt-hour |
| Language | English |
| Part of speech | Noun |
| Letters | 13 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “kilowatt-hour” in English
Rare enough to double-check
kilowatt-hour is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "A unit of energy equal to that provided by one kilowatt acting for one hour (3·6 × 10⁶ joules).".
Our edit-distance generator produced no likely misspellings for kilowatt-hour, a straightforward case of a spelling with little room for common typos. This headword has no recorded confusable partner, which typically means the spelling is too distinctive to be mistaken for another word.
Etymologically, the entry records: By surface analysis, kilowatt + hour, or, by surface analysis, kilo- + watt-hour. The correct English form is kilowatt-hour, spelled K-I-L-O-W-A-T-T---H-O-U-R.
Definition
- 1A unit of energy equal to that provided by one kilowatt acting for one hour (3·6 × 10⁶ joules).
Recorded use
Wiktionary examplesThese source excerpts show how kilowatt-hour appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
Holonyms: watt-year (31.536e6 J) < gigajoule (1.000e9 J) < megawatt-hour (3.600e9 J) < kilowatt-year (31.536e9 J) < terajoule (1.000e12 J) < gigawatt-hour (3.600e12 J) < megawatt-year (31.536e12 J) < petajoule (1.000e15 J) < terawatt-hour (3.600e15 J) < gigawatt-year (31.536e15 J) < exajoule (1.000e18 J) < petawatt-hour (3.600e18 J) < terawatt-year (31.53…
Meronyms: yoctojoule (1.000e-24 J) < zeptojoule (1.000e-21 J) < attojoule (1.000e-18 J) < hartree (4.35974e-18 J) < femtojoule (1.000e-15 J) < picojoule (1.000e-12 J) < nanojoule (1.000e-9 J) < microjoule (1.000e-6 J) < millijoule (1.000e-3 J) < joule (1 J) < milliwatt-hour (3.6 J) < microwatt-year (31.536 J) < kilojoule (1.000e3 J) < watt-hour (3.600e3 J…
Etymology
By surface analysis, kilowatt + hour, or, by surface analysis, kilo- + watt-hour.
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.