defragmentation

/diːˌfɹæɡmənˈteɪʃən/

//diːˌfɹæɡmənˈteɪʃən// noun

"defragmentation" is a 15-letter English headword indexed on PlainSpell.

The verdict

“defragmentation” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.

Unranked
below top-frequency English
15
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - The action of defragmenting, particularly with respect to a computer disk or drive.

Corpus desk

Index EN-defragmentation · defragmentation · English

defragmentation · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 15 letters
  • VOW-6 6 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "D" 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.

Key facts for defragmentation
PropertyValue
Headworddefragmentation
LanguageEnglish
Part of speechNoun
IPA/diːˌfɹæɡmənˈteɪʃən/
Letters15
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “defragmentation” in English

defragmentationsits beyond the 100,000 most-frequent English words, in the long tail of technical, archaic, or otherwise rare vocabulary where spelling doubt tends to strike hardest.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

defragmentation is uncommon English outside the top frequency list, classed as anoun, transcribed /diːˌfɹæɡmənˈteɪʃən/. Rarity is why readers land here mid-draft. Gloss: "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

  1. 1
    The 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

How do you spell "defragmentation"?
"defragmentation" is spelled D-E-F-R-A-G-M-E-N-T-A-T-I-O-N. The IPA pronunciation is /diːˌfɹæɡmənˈteɪʃən/.
What does "defragmentation" mean?
As a noun, "defragmentation" means: The action of defragmenting, particularly with respect to a computer disk or drive.
How do you pronounce "defragmentation"?
The IPA (International Phonetic Alphabet) transcription for "defragmentation" is /diːˌfɹæɡmənˈteɪʃən/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "defragmentation"?
From defragment + -ation or de- + fragmentation. See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list