agglomeration

IPA/əˌɡlɒməˈreɪʃn/
KK[əɡlˌɑmɚˈeʃən]IPA/əˌɡlɑːməˈreɪʃn/

agglomeration — noun

  • agglomerationsingular
  • agglomerationsplural

1. an untidy or mixed collection of many different kinds of things that have been g

1.nounC1
Definition

an untidy or mixed collection of many different kinds of things that have been gathered together without any clear order or plan

Example

The city's old town is an agglomeration of narrow streets, small shops, and historic houses.

pattern: an agglomeration of [places/objects]

The report contained an agglomeration of statistics from various sources with no clear conclusion.

used with abstract items (data, statistics, information)

Common collocations
  • vast agglomeration
  • sprawling agglomeration
  • an agglomeration of
Synonyms
  • collection

    neutral, most common word for a group of items; 'agglomeration' emphasises disorder

  • cluster

    suggests items close together; often used for groups of similar things

  • assortment

    focuses on variety of types; less negative than 'agglomeration'

  • hodgepodge

    informal; strongly emphasises lack of order or mixing of incompatible things

Antonyms
  • order

    state of neat organisation rather than jumbled mixture

Grammar Patterns

an agglomeration of [plural noun]

Usage Note

Typically followed by 'of' and a plural noun listing the different items. The noun is countable and usually appears in singular form. Implies the items were brought together without deliberate organisation — use 'collection' instead for deliberately gathered sets.

Common Mistakes

The agglomeration of students gathered in the hall was very loud.
The crowd of students gathered in the hall was very loud.
'Agglomeration' describes a mixture of different kinds of things, not a group of similar people.
She has an agglomeration of rare stamps from around the world.
She has a collection of rare stamps from around the world.
For deliberately organised sets, use 'collection'; 'agglomeration' implies a random jumble.

2. the act or process of bringing various items, particles, or elements together so

2.nounC2
Definition

the act or process of bringing various items, particles, or elements together so that they form a larger mass or group

Example

The agglomeration of data from multiple experiments took the research team over six months.

pattern: the agglomeration of [things] + verb of duration

Rapid urban agglomeration has changed the landscape around Seoul and Tokyo over the past decade.

collocation: urban agglomeration (city expansion process)

Common collocations
  • process of agglomeration
  • industrial agglomeration
  • urban agglomeration
Synonyms
  • accumulation

    emphasises gradual increase over time; more common in everyday use

  • aggregation

    formal synonym; often used in scientific contexts

  • gathering

    general, less formal; can apply to people or things

Antonyms
  • dispersal

    the act of spreading apart rather than coming together

  • dissolution

    the breaking up of a mass into separate parts

Grammar Patterns

the agglomeration of [noun]

[adjective] agglomeration

Usage Note

Uncountable noun — no plural form. Common in academic and technical writing across urban planning, geology, manufacturing, and economics. Can also appear as a modifier in compound nouns such as 'agglomeration process' or 'agglomeration economy'.

Common Mistakes

The agglomeration of the committee took three hours.
The formation of the committee took three hours.
'Agglomeration' is used for physical particles or abstract elements coming together, not for people forming an organisation.
Agglomerations of people blocked the street.
Crowds of people blocked the street.
'Agglomeration' refers to things or non-human elements, not groups of people.

Word family

Synonym discussion

Sense: noun/1

'Collection' is the broadest and most neutral word — any group of items gathered deliberately or naturally ('a stamp collection'). 'Cluster' suggests a close physical grouping of similar items, like a cluster of stars or trees. 'Assortment' highlights variety among the items and is often neutral or positive ('an assortment of cheeses'). 'Agglomeration' adds a sense of disorder, randomness, or lack of curation — things have been brought together but not sorted or arranged. 'Hodgepodge' is the informal counterpart, strongly emphasising a messy mix of incompatible elements. For example, you might say 'the shelf held an assortment of cookbooks and novels' (neutral variety), but 'the shelf held an agglomeration of cookbooks, old receipts, and loose buttons' (jumbled together).

collection ↗cluster ↗assortment ↗hodgepodge ↗

Common collocations

Nouns

Prepositions

Etymology

LatinFrenchEnglish

Coming from Latin 'agglomerare' — where 'ad-' means 'toward' and 'glomerare' means 'to form into a ball', from 'glomus' meaning 'ball of yarn' — the word originally described things rolling or being gathered into a ball-like mass. It entered English through French in the 1600s, and over time lost the literal 'ball' image, coming to mean any kind of loose, jumbled gathering.

First known use

1661

1661, in the meaning defined at sense 1