cluster

1 of 2

noun

clus·​ter ˈklə-stər 

: 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

clustery

ˈklə-st(ə-)rē 

adjective

cluster

2 of 2

verb

clustered; clustering ˈklə-st(ə-)riŋ 

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

Synonyms

Noun

• array
• assemblage
• band
• bank
• batch
• battery
• block
• bunch
• clot
• clump
• clutch
• collection
• constellation
• group
• grouping
• huddle
• knot
• lot
• muster
• package
• parcel
• passel
• set
• suite

Verb

• assemble
• collect
• concenter
• concentrate
• conglomerate
• congregate
• convene
• converge
• forgather
• foregather
• gather
• meet
• rendezvous

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

Recent Examples on the Web

Noun

Keep that rain gear handy as a cluster of thunderstorms is approaching the Kansas City area, bringing heavy rains, gusty winds and small hail, according to the National Weather Service. —Robert A. Cronkleton, Kansas City Star, 2 May 2024

The 2024 Traverse has new body panels, controls and displays, including an 11.1-inch configurable instrument cluster and 17.7-inch touch screen. —Mark Phelan, Detroit Free Press, 2 May 2024

Word History

Etymology

Noun and Verb

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

First Known Use

Noun

before the 12th century, in the meaning defined above

Verb

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

Phrases Containing cluster

• cluster analysis
• cluster bomb
• cluster headache
• globular cluster
• inter-cluster
• oak-leaf cluster
• sub-cluster

Kids Definition

cluster

1 of 2 noun

clus·​ter ˈkləs-tər 

: a number of similar things growing, collected, or grouped together : bunch

a cluster of houses

a flower cluster

cluster

2 of 2 verb

clustered; clustering -t(ə-)riŋ 

: to grow, collect, or gather in a cluster

Medical Definition

cluster

noun

clus·​ter ˈkləs-tər 

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