accession

/ækˈsɛʃ.ən/

//ækˈsɛʃ.ən// noun

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

"accession" is a 9-letter English headword indexed on PlainSpell.

The verdict

“accession” has 10 generated spelling variants in the English index at frequency #17,067. The variants make it a useful spelling check.

#17,067
frequency rank, English
3,931
“A” headwords
10
tracked misspellings
2
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A coming to; the act of acceding and becoming joined.

Corpus desk

Index EN-accession · accession · English

accession · rank #17,067 · 10 variants · 2 confusables

  • FREQ-MID #17,067
  • LEN-LONG 9 letters
  • VOW-4 4 vowels
  • CONFUS-LOW 2 pairs
  • VAR-MID 10 variants
  • BOOK-MID 3,931
  • PHOTO-FINISH abyss

Nearest frequency peer: abyss (-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.

Rank peers near misspelling magnet “accession”

Same rarity band: useful when a typo lands on a peer headword

corpus weight

What this shows “accession” sits among these FrequencyWords peers; misspelling depth is tracked separately in the edit-distance chart.

Source FrequencyWords open word-frequency list As of September 3, 2026

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

accession vs ascension
78% similar
accession vs accessing
78% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for accession
PropertyValue
Headwordaccession
LanguageEnglish
Part of speechNoun
IPA/ækˈsɛʃ.ən/
Letters9
Frequency rank#17,067
Misspellings tracked10
Confusable pairs2
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “accession”

Word frequency stretches from the small set of words we reach for constantly (left) out to the long tail barely used once in a while (right).accessionlands here:

#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. Same rarity band neighbours include “abyss” (#17,066), “abandonment” (#17,065), “Alvarez” (#17,069). Among 3,931 “A” headwords, “accession” is #17,067. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 10 spelling variants around accession (IPA /ækˈsɛʃ.ən/), anoun. Corpus frequency is #17,067 among 3,931 “A” headwords. Wiktionary lists 11 senses, so context still picks the gloss.

Our generated misspelling index lists 10 likely wrong-spelling variants for accession, with forms such as "accesion", "accesison", and "accessino". Every one of these variants traces to a single-character edit -- an added or dropped letter, a swapped consonant, or a vowel swap -- the kind of slip a spell-checker is built to catch. It also participates in 2 confusable-pair relationships, "ascension", "accessing", since the words sound or look close enough that writers reach for the wrong one mid-sentence.

Etymologically, the entry records: Ultimately from Latin accessiō(n), from accēdō (English accede). Cognate to French accession. First attested in 1646. The correct English form is accession, spelled A-C-C-E-S-S-I-O-N.

Definition

  1. 1
    A coming to; the act of acceding and becoming joined.
  2. 2
    Increase by something added; that which is added; augmentation from without.
  3. 3
    Increase by something added; that which is added; augmentation from without.
  4. 4
    A mode of acquiring property, by which the owner of a corporeal substance which receives an addition by growth, or by labor, has a right to the part or thing added, or the improvement (provided the thing is not changed into a different species).
  5. 5
    The act by which one power becomes party to engagements already in force between other powers.
  6. 6
    The act of coming to or reaching a throne, an office, or dignity.
  7. 7
    The invasion, approach, or commencement of a disease; a fit or paroxysm.
  8. 8
    Agreement.
  9. 9
    Access; admittance.
  10. 10
    A group of plants of the same species collected at a single location, often held in genebanks.
  11. 11
    Complicity, concurrence or assent in some action.

Recorded use

Wiktionary examples

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

  1. a king's accession to a confederacy
  2. The only accession which the Roman empire received, during the first century of the Christian Aera, was the province of Britain.

Etymology

Ultimately from Latin accessiō(n), from accēdō (English accede). Cognate to French accession. First attested in 1646.

This word in other languages

ascenso(Español)accession(Français)Beitritt(Deutsch)

Common misspellings

Also misspelled as:

  • accesion
  • accesison
  • accessino
  • accessionn
  • accessoin
  • accestion
  • accsesion
  • acecssion
  • acession
  • cacession

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of accession - expressed in single-character edits (insert, delete, or swap one letter). Bigger bars stand out at a glance; a one-edit slip is the hardest to catch.

accesion1accesison2accessino2accessionn1accessoin2accestion1accsesion2acecssion2
Edit distance from "accession"

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 "accession"?
"accession" is spelled A-C-C-E-S-S-I-O-N. The IPA pronunciation is /ækˈsɛʃ.ən/.
What does "accession" mean?
As a noun, "accession" means: A coming to; the act of acceding and becoming joined.
What words are commonly confused with "accession"?
"accession" is commonly confused with "ascension", "accessing". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "accession"?
The IPA (International Phonetic Alphabet) transcription for "accession" is /ækˈsɛʃ.ən/. 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 "accession"?
Ultimately from Latin accessiō(n), from accēdō (English accede). Cognate to French accession. First attested in 1646. 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 "accession", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 9 letters (nearest by frequency rank).

Bethlehem#17,086bourgeois#17,089childcare#17,100condensed#17,108

Similar misspelling depth

Headwords with a similar count of attested misspellings (10 here; floor ≥5).

Alvarez10 variantsweeping10 variantsunleash10 variantsbraking10 variants

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

Source: FrequencyWords open word-frequency list