disjunction

/dɪsˈdʒʌŋk(t)ʃən/

//dɪsˈdʒʌŋk(t)ʃən// noun

By · According to Wiktionary data (CC BY-SA) ·

"disjunction" is a 11-letter English headword indexed on PlainSpell.

The verdict

“disjunction” is uncommon English (frequency #74,900 among 3,470 “D” headwords), classed as a noun. The kind of spelling people second-guess.

#74,900
frequency rank, English
3,470
“D” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - The act of disjoining; disunion, separation.

Corpus desk

Index EN-disjunction · disjunction · English

disjunction · rank #74,900 · 0 variants · 0 confusables

  • FREQ-RARE #74,900
  • LEN-MEGA 11 letters
  • VOW-4 4 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 3,470
  • PHOTO-FINISH dismissively

Nearest frequency peer: dismissively (+1 rank slots)

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.

Long-tail ranks near “disjunction”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

What this shows Long-tail view: where “disjunction” sits against similarly uncommon English ranks.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for disjunction
PropertyValue
Headworddisjunction
LanguageEnglish
Part of speechNoun
IPA/dɪsˈdʒʌŋk(t)ʃən/
Letters11
Frequency rank#74,900
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “disjunction” in English

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right).disjunctionfalls in this rarity band:

#1#100#1K#10K#100K
← used constantlyrarely used →

Ticks step logarithmically, so each one marks a roughly tenfold drop in how often the word turns up. Rare peers in the same band: “dismissively” (#74,901), “displease” (#74,902), “distaff” (#74,903). Among 3,470 “D” headwords, “disjunction” is #74,900. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

disjunction is uncommon English at frequency #74,900 among 3,470 “D” headwords, classed as anoun, transcribed /dɪsˈdʒʌŋk(t)ʃən/. Rarity is why readers land here mid-draft. 5 senses are on record.

The misspelling generator found no plausible variants for disjunction, 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 Old French disjunction, from Latin disiunctiō. The correct English form is disjunction, spelled D-I-S-J-U-N-C-T-I-O-N.

Definition

  1. 1
    The act of disjoining; disunion, separation.
  2. 2
    The state of being disjoined, contrasting, or opposing.
  3. 3
    The proposition resulting from the combination of two or more propositions using the or operator.
  4. 4
    A logical operator that results in “true” when any of its operands are true.
  5. 5
    During meiosis, the separation of chromosomes (homologous in meiosis I, and sister chromatids in meiosis II).

Recorded use

Wiktionary examples

These source excerpts show how disjunction appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. the disjunction expressed by disjunctive conjunctions, such as but or or
  2. The disjunction between the despotism the British had been practising in India and the liberal, secular, democratic trends of their domestic politics was too embarrassing to endure indefinitely.

Etymology

From Old French disjunction, from Latin disiunctiō.

Synonyms

disjuncture

Antonyms

junction

This word in other languages

disjonction(Français)Disjunktion(Deutsch)disjunção(Português)

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

How do you spell "disjunction"?
"disjunction" is spelled D-I-S-J-U-N-C-T-I-O-N. The IPA pronunciation is /dɪsˈdʒʌŋk(t)ʃən/.
What does "disjunction" mean?
As a noun, "disjunction" means: The act of disjoining; disunion, separation.
How do you pronounce "disjunction"?
The IPA (International Phonetic Alphabet) transcription for "disjunction" is /dɪsˈdʒʌŋk(t)ʃən/. 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 "disjunction"?
From Old French disjunction, from Latin disiunctiō. 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.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "disjunction", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 11 letters (nearest by frequency rank).

firebombing#74,960chickenshit#74,827goddaughter#74,999Greencastle#75,012

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

Source: FrequencyWords open word-frequency list