ag·​glom·​er·​a·​tion | \ ə-ˌglä-mə-ˈrā-shən How to pronounce agglomeration (audio) \

Definition of agglomeration

1 : the action or process of collecting in a mass the agglomeration of matter into stars and galaxies
2 : a heap or cluster of usually disparate (see disparate sense 1) elements … an agglomeration of 100-year-old cottages with gingerbread scroll-saw ornamentation.— Ira Henry Freeman
3 : a large, densely and contiguously populated area consisting of a city and its suburbs an urban agglomeration

Keep scrolling for more

Other Words from agglomeration

agglomerative \ ə-​ˈglä-​mə-​ˌrā-​tiv How to pronounce agglomeration (audio) \ adjective

Examples of agglomeration in a Sentence

This suburb has become just a vast agglomeration of houses, people, and cars. a mere agglomeration of warring tribes, it was far from being a unified nation
Recent Examples on the Web Her home, at the top of a winding road, is a sleek agglomeration of boxes in concrete, pale wood, and glass. Rob Haskell, Vogue, "Leading By Example: How Naomi Osaka Became the People’s Champion," 11 Dec. 2020 Several walls are hung with his agglomeration of international plates, ranging from Dutch Delft to Japanese Imari; above his bed is a series of thrift-shop watercolors. Nancy Hass, New York Times, "In Morocco, a Compact Apartment Filled With Over 10,000 Curios," 2 Oct. 2020 Since then, Brasília has burst the bounds of the Plano Piloto, designed for 500,000, and bloomed into an urban agglomeration of 3 million, no less plagued by inequality than the rest of the country. Michael Snyder, Travel + Leisure, "Young Creatives Are Breathing New Life Into Brazil's Planned Capital," 12 Oct. 2020 The team suggests the culprit is an agglomeration of dark matter, the mysterious but unseen stuff thought to make up 85% of the universe’s matter. Daniel Clery, Science | AAAS, "Astronomers spy galaxies caught in the web of a voracious black hole," 1 Oct. 2020 The most populated part of Malta is a dense agglomeration of towns near Valletta, the capital. Teju Cole, New York Times, "In Dark Times, I Sought Out the Turmoil of Caravaggio’s Paintings," 23 Sep. 2020 The dots on Toxmap cluster around major cities, forming dense agglomerations in the country’s most populated corridors. Michael Schulson, Scientific American, "Federal Toxmap Shutters, Raising the Ire of Pollution Researchers," 17 Dec. 2019 A century earlier, technology spurred agglomeration., "Robots Pose Biggest Risk to the Poorest Countries," 29 Apr. 2020 The comet consists of a loose agglomeration of ices and dust particles, and is likely no more than 3,200 feet across, about the length of nine football fields. Doyle Rice, USA TODAY, "'Snowman from a dark and cold place': Interstellar comet is an unusual visitor from outer space," 20 Apr. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'agglomeration.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of agglomeration

1661, in the meaning defined at sense 1

History and Etymology for agglomeration

borrowed from Medieval Latin agglomerātiōn-, agglomerātiō, from Latin agglomerāre "to agglomerate entry 1" + -tiōn-, -tiō, suffix of action nouns

Keep scrolling for more

Learn More about agglomeration

Time Traveler for agglomeration

Time Traveler

The first known use of agglomeration was in 1661

See more words from the same year

Statistics for agglomeration

Cite this Entry

“Agglomeration.” Dictionary, Merriam-Webster, Accessed 3 Mar. 2021.

Style: MLA
MLA Chicago APA Merriam-Webster

Keep scrolling for more

More Definitions for agglomeration



English Language Learners Definition of agglomeration

formal : a large group, collection, or pile of different things

More from Merriam-Webster on agglomeration

Thesaurus: All synonyms and antonyms for agglomeration

Comments on agglomeration

What made you want to look up agglomeration? Please tell us where you read or heard it (including the quote, if possible).


Test Your Vocabulary

February 2021 Words of the Day Quiz

  • squirrel in winter
  • Which is a synonym of perdure?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

 AlphaBear 2

Spell words. Make bears.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!