cluster

noun
clus·​ter | \ ˈklə-stər How to pronounce cluster (audio) \

Definition of cluster

 (Entry 1 of 2)

: a number of similar things that occur together: such as
a : two or more consecutive consonants or vowels in a segment of speech
b : a group of buildings and especially houses built close together on a sizable tract in order to preserve open spaces larger than the individual yard for common recreation
c : an aggregation of stars or galaxies that appear close together in the sky and are gravitationally associated the Perseus cluster of galaxies
d : a larger than expected number of cases of disease (such as leukemia) occurring in a particular locality, group of people, or period of time
e : a number of computers networked together in order to function as a single computing system Consisting of groups of inexpensive machines cobbled together, clusters in many ways have supplanted traditional supercomputers.— Elizabeth K. Wilson

cluster

verb
clustered; clustering\ ˈklə-​st(ə-​)riŋ How to pronounce clustering (audio) \

Definition of cluster (Entry 2 of 2)

transitive verb

1 : to collect into a cluster cluster the tents together
2 : to furnish with clusters the bridge was clustered with men and officers— Herman Wouk

intransitive verb

: to grow, assemble, or occur in a cluster they clustered around the fire

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Other Words from cluster

Noun

clustery \ ˈklə-​st(ə-​)rē How to pronounce clustery (audio) \ adjective

Examples of cluster in a Sentence

Noun a cluster of cottages along the shore A small cluster of people had gathered at the scene of the accident. Verb The children clustered around the storyteller. the mice clustered together into a small burrow
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Recent Examples on the Web: Noun Get our daily newsletter What is now Katowice was for centuries a cluster of German farms that passed between Polish, Czech, Austrian and Prussian control. The Economist, "How the capital of Poland’s coal belt is reinventing itself," 5 Sep. 2019 There are clusters of gathering spaces with comfy couches and chairs, and front-to-back views of the water. Pamela Wright, BostonGlobe.com, "Block Island Beach House is updated, but still honors the past," 29 Aug. 2019 There's also another cluster of storms to watch well east of the Windward Islands. Jennifer Gray, CNN, "The tropics are starting to sizzle with tropical formation likely off the US coast this weekend," 23 Aug. 2019 Around the Local Group are other small clusters of galaxies spanning about 30 million light-years. NBC News, "Master plan of the universe revealed in new galaxy maps," 11 Aug. 2019 Further down Third was a cluster of Greek coffeehouses, which at night featured popular exotic Greek dancers and were part of a large Greek community that had settled around Third and Folsom between 1910 and 1920. Gary Kamiya, SFChronicle.com, "SF ‘hobohemia’ transformed into Skid Row as jobs and city changed," 10 Aug. 2019 Italy keeps better vital statistics than the United States does, and has had reliable vital statistics across the country for hundreds of years — yet in Italy, too, there are clusters of the country where lots of supercentenarians pop up. Kelsey Piper, Vox, "Study: many of the “oldest” people in the world may not be as old as we think," 8 Aug. 2019 Gateway is a cluster of interconnected modules that will orbit 930 to 43,500 miles above the lunar surface. Chuck Thompson, Popular Mechanics, "Onward To Mars: What Our Journey To the Red Planet Might Look Like," 24 July 2019 Gilbert said there will be one cluster of hotels used in Madison and potentially another in Lake County, Illinois. Tom Daykin, Milwaukee Journal Sentinel, "With just a year to go until 2020 DNC, organizers focus on making a good first impression of Milwaukee," 10 July 2019 Recent Examples on the Web: Verb But according to public officials, there are only about 250 official air monitoring stations, one for every 647 square miles, many of them clustered around large metro areas. Washington Post, "When the power went out during California’s wildfires, the air quality monitors turned off, too," 4 Nov. 2019 These increases clustered among those in the same schools and households, probably suggesting that the children are rebuilding their lost immunity by falling ill, Grenfell says. Karen Weintraub, Scientific American, "Measles Infection Could Leave Kids Vulnerable to Other Diseases," 31 Oct. 2019 Demographic changes in Wisconsin prompted Cross to overhaul the system in 2018 by clustering two-year colleges with four-year campuses by region as part of a plan to stem rapid enrollment declines on the UW's two-year campuses. Molly Beck, Milwaukee Journal Sentinel, "Ray Cross to retire after five years leading UW System, 42 years in higher education," 24 Oct. 2019 The reason is what economists call clustering effects. Noah Smith, The Denver Post, "Noah Smith: The U.S. needs more of India’s and China’s best and brightest," 22 Oct. 2019 Where fruit is clustered, remove enough young fruits to leave only one or two fruits per cluster. oregonlive, "What can I do to increase pear crop?: Ask an expert," 14 Sep. 2019 The city’s development blueprint for Torrey Highlands, a mostly residential area located between Rancho Penasquitos and Carmel Valley, is to cluster most of the commercial development along state Route 56 where The Preserve would be located. San Diego Union-Tribune, "San Diego approves 11-acre office complex despite opposition," 10 Sep. 2019 The cameras are located on the rear of the phone and feature three lenses clustered into a triangular shape. Minyvonne Burke, NBC News, "Twitter users mock iPhone 11 Pro's triple-camera, compare it to fidget spinner and spider's face," 10 Sep. 2019 In donated human brains, his team found more tau tangles clustered around amyloid plaques when people harbored microglia-weakening TREM2 mutations. Lauran Neergaard, chicagotribune.com, "Scientists rethink Alzheimer’s, diversifying the drug search," 11 Sep. 2019

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

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First Known Use of cluster

Noun

before the 12th century, in the meaning defined above

Verb

14th century, in the meaning defined at transitive sense 1

History and Etymology for cluster

Noun and Verb

Middle English, from Old English clyster; akin to Old English clott clot

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Statistics for cluster

Last Updated

13 Nov 2019

Time Traveler for cluster

The first known use of cluster was before the 12th century

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More Definitions for cluster

cluster

noun
How to pronounce cluster (audio)

English Language Learners Definition of cluster

 (Entry 1 of 2)

: a group of things or people that are close together

cluster

verb

English Language Learners Definition of cluster (Entry 2 of 2)

: to come together to form a group

cluster

noun
clus·​ter | \ ˈklə-stər How to pronounce cluster (audio) \

Kids Definition of cluster

 (Entry 1 of 2)

: a number of similar things growing or grouped closely together : bunch a cluster of houses a flower cluster

cluster

verb
clustered; clustering

Kids Definition of cluster (Entry 2 of 2)

: to grow, collect, or assemble in a bunch

cluster

noun
clus·​ter | \ ˈkləs-tər How to pronounce cluster (audio) \

Medical Definition of cluster

: a larger than expected number of cases of disease (as leukemia) occurring in a particular locality, group of people, or period of time

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Comments on cluster

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