defragmentation
/diːˌfɹæɡmənˈteɪʃən/
"defragmentation" is a 15-letter English headword indexed on PlainSpell.
The verdict
“defragmentation” is outside the top-ranked English vocabulary, used as a noun - the kind of word writers most often double-check.
- Unranked
- below top-frequency English
- 15
- letters
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - The action of defragmenting, particularly with respect to a computer disk or drive.
| Property | Value |
|---|---|
| Headword | defragmentation |
| Language | English |
| Part of speech | Noun |
| IPA | /diːˌfɹæɡmənˈteɪʃən/ |
| Letters | 15 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “defragmentation” sits in English frequency
Spelling & Dictionary Insight
The English entry for defragmentation is 15 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /diːˌfɹæɡmənˈteɪʃən/. It sits outside the most-frequent rank tiers, which is often why uncommon words generate more spelling variants per reader. The dominant gloss from Wiktionary reads: "The action of defragmenting, particularly with respect to a computer disk or drive.".
Our edit-distance generator produced no likely misspellings for defragmentation, since its letter pattern doesn't lend itself to common typo substitutions. It is not paired with a close-neighbour confusable in our dataset, which tends to mean the word is visually distinctive enough to stand on its own.
Etymologically, the entry records: From defragment + -ation or de- + fragmentation. The correct English form is defragmentation, spelled D-E-F-R-A-G-M-E-N-T-A-T-I-O-N.
Definition
- 1The action of defragmenting, particularly with respect to a computer disk or drive.
Etymology
From defragment + -ation or de- + fragmentation.
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 “defragmentation”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is D-E-F-R-A-G-M-E-N-T-A-T-I-O-N - every other letter order is a misspelling in standard orthography.
- Say it as /diːˌfɹæɡmənˈteɪʃən/ (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
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.