Word.ws English Dictionary

cluster variable

cluster variable noun: an RR Lyrae variable; a type of variable star commonly (but not exclusively) found in globular clusters.

Noun

cluster variable (plural cluster variables)

  1. an RR Lyrae variable; a type of variable star commonly (but not exclusively) found in globular clusters
    • This period, which is exceptionally long for a cluster variable, satisfies the observations fairly well except in a few cases.1902, Solon Irving Bailey, A Discussion of Variable Stars in the Cluster [omega] Centauri
    • It is a good example of a cluster variable having a large range of variations, a short period, and extremely rapid increase and decrease in light.1913, Solon Irving Bailey, Variable Stars in the Cluster Messier 3, page 160
  2. (cluster analysis) A variable whose values are used to classify data points into clusters; a variable that identifies one of the defining properties of clusters.
    • The first model includes the potential cluster variable conditioned on clustering variables already selected, while in the second model the variable is not included.2011, Sabine Landau, Morven Leese, Daniel Stahl, Cluster Analysis

Examples of cluster variable in a sentence

  • It was five years before a cluster variable was found outside of a globular cluster.1950, Leaflet:
  • There are some thirty classical Cepheids, and a few irregular variables, in the globular clusters among the stars brighter than the typical cluster variable.1949, Popular Astronomy:

Forms of cluster variable

pluralcluster variables

Questions about cluster variable

What does cluster variable mean?
Cluster variable means an RR Lyrae variable; a type of variable star commonly (but not exclusively) found in globular clusters.
How do you use cluster variable in a sentence?
It was five years before a cluster variable was found outside of a globular cluster.
What part of speech is cluster variable?
Cluster variable is a noun.
What is the plural of cluster variable?
The plural of cluster variable is cluster variables.

Words near cluster variable in the dictionary

  1. cluster respiration
  2. cluster set
  3. cluster sets
  4. cluster state
  5. cluster states
  6. cluster variable
  7. cluster variables
  8. cluster zoning
  9. cluster-ball
  10. cluster-balls
  11. cluster-fuck

Source and license

Adapted from Wiktionary: cluster variable (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “cluster variable.” Word.ws, https://word.ws/cluster_variable. Based on Wiktionary, CC BY-SA 4.0.