agglomeration

noun

"agglomeration" is a 13-letter English headword indexed on PlainSpell.

The verdict

“agglomeration” is uncommon English (frequency #50,923 among 3,931 “A” headwords), classed as a noun. The kind of spelling people second-guess.

#50,923
frequency rank, English
3,931
“A” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - The act or process of collecting in a mass; a heaping together.

Corpus desk

Index EN-agglomeration · agglomeration · English

agglomeration · rank #50,923 · 0 variants · 0 confusables

  • FREQ-RARE #50,923
  • LEN-MEGA 13 letters
  • VOW-6 6 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 3,931
  • PHOTO-FINISH Aesop

Nearest frequency peer: Aesop (-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 “agglomeration”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

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

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for agglomeration
PropertyValue
Headwordagglomeration
LanguageEnglish
Part of speechNoun
Letters13
Frequency rank#50,923
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “agglomeration” in English

This scale runs from the tiny cluster of words that carry ordinary speech (left) to the long tail of words almost nobody reaches for (right).agglomerationfalls in this rarity band:

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

Scale is logarithmic (each tick is 10× rarer). Rare peers in the same band: “Aesop” (#50,922), “Alaric” (#50,924), “alchemists” (#50,925). Among 3,931 “A” headwords, “agglomeration” is #50,923. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

agglomeration is uncommon English at frequency #50,923 among 3,931 “A” headwords, classed as anoun. Rarity is why readers land here mid-draft. 4 senses are on record.

Zero misspellings are on record for agglomeration in our index, since its letter sequence doesn't invite the usual edit-distance slips. It is not paired with a close-neighbour confusable in our dataset, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.

Etymologically, the entry records: From Latin agglomerātiō. By surface analysis, agglomerate + -ion. The correct English form is agglomeration, spelled A-G-G-L-O-M-E-R-A-T-I-O-N.

Definition

  1. 1
    The act or process of collecting in a mass; a heaping together.
  2. 2
    State of being collected in a mass; a mass; cluster.
  3. 3
    An extended city area comprising the built-up area of a central city and any suburbs linked by continuous urban area.
  4. 4
    A mass of large volcanic fragments bonded under heat.

Etymology

From Latin agglomerātiō. By surface analysis, agglomerate + -ion.

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); 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 "agglomeration"?
"agglomeration" is spelled A-G-G-L-O-M-E-R-A-T-I-O-N.
What does "agglomeration" mean?
As a noun, "agglomeration" means: The act or process of collecting in a mass; a heaping together.
What is the origin of the word "agglomeration"?
From Latin agglomerātiō. By surface analysis, agglomerate + -ion. 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 "agglomeration", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 13 letters (nearest by frequency rank).

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

Source: FrequencyWords open word-frequency list