cluster

[kluhs-ter]
noun
1.
a number of things of the same kind, growing or held together; a bunch: a cluster of grapes.
2.
a group of things or persons close together: There was a cluster of tourists at the gate.
3.
U.S. Army. a small metal design placed on a ribbon representing an awarded medal to indicate that the same medal has been awarded again: oak-leaf cluster.
4.
Phonetics. a succession of two or more contiguous consonants in an utterance, as the str- cluster of strap.
5.
Astronomy. a group of neighboring stars, held together by mutual gravitation, that have essentially the same age and composition and thus supposedly a common origin. Compare globular cluster, open cluster, stellar association.
verb (used with object)
6.
to gather into a cluster or clusters.
7.
to furnish or cover with clusters.
verb (used without object)
8.
to form a cluster or clusters: The people clustered around to watch.

Origin:
before 900; Middle English; Old English cluster, clyster bunch; cognate with Low German kluster

clusteringly, adverb
clustery, adjective
intercluster, adjective
subcluster, noun
unclustered, adjective
unclustering, adjective


8. group, gather, throng, crowd, bunch.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
cluster (ˈklʌstə)
 
n
1.  a number of things growing, fastened, or occurring close together
2.  a number of persons or things grouped together
3.  (US) military a metal insignia worn on a medal ribbon to indicate a second award or a higher class of a decoration or order
4.  military
 a.  a group of bombs dropped in one stick, esp fragmentation and incendiary bombs
 b.  the basic unit of mines used in laying a minefield
5.  astronomy an aggregation of stars or galaxies moving together through space
6.  a group of two or more consecutive vowels or consonants
7.  statistics a naturally occurring subgroup of a population used in stratified sampling
8.  chem
 a.  a chemical compound or molecule containing groups of metal atoms joined by metal-to-metal bonds
 b.  the group of linked metal atoms present
 
vb
9.  to gather or be gathered in clusters
 
[Old English clyster; related to Low German Kluster; see clod, clot]
 
'clustered
 
adj
 
'clusteringly
 
adv
 
'clustery
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

cluster
O.E. clyster "cluster," probably from the same root as clot. The verb is from late 14c. Clusterfuck "bungled or confused undertaking" is from 1969, U.S. military slang, earlier "orgy" (1966).
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
The report also examines how full-time seniors in different clusters of majors
  spend their time beyond studying.
The first-time president clusters out-of-town meetings with alumni and donors
  to avoid too many overnights.
Running the algorithms, officials found clusters of behaviors that helped
  predict success.
Reduce office-staff expenses by pooling support-staff members in clusters of
  four and five departments.
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