A cluster is a small group of people or things. When you and your friends huddle awkwardly around the snack table at a party, whispering and trying to muster enough nerve to hit the dance floor, you’ve formed a cluster.

  • Pronunciation: / 'klʌstɚ/
  • English description: a grouping of a number of similar things
  • Synonyms: bunch
  • Chinese Translation: 集群(ji2 qun2)
  • Spanish Translation: el grupo
  • ORIGIN: Cluster comes to us from the Old English word clyster, meaning bunch. Nowadays, you can use cluster as either a noun or a verb. When we were kids, we would stand in a cluster (noun) on the street corner, eagerly awaiting the appearance of the Good Humor truck every afternoon. Then we would cluster (verb) eagerly around the driver, demanding ice cream. Virtually anything can form a cluster — flowers, cells, stars, human beings, and even events.


  • Rotational spectroscopy and accompanying theory uncover gear like joint motion of a pair of water molecules in a cluster.
  • These were not just stars but nebulae – clouds of gas that would become stars – and whole clusters of stars rendered faint by distance.

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