Editing Cluster (section)

== Science and technology ==
=== Astronomy ===
* [[Cluster (spacecraft)]], constellation of four European Space Agency spacecraft
* [[Cluster II (spacecraft)]], a European Space Agency mission to study the magnetosphere
* [[Asteroid cluster]], a small asteroid family
* [[Galaxy cluster]], large gravitationally bound groups of galaxies, or groups of groups of galaxies
* [[Supercluster]], the largest gravitationally bound objects in the universe, composed of many galaxy clusters
* [[Star cluster]]
** [[Globular cluster]], a spherical collection of stars whose orbit is either partially or completely in the halo of the parent galaxy
** [[Open cluster]], a spherical collection of stars that orbits a galaxy in the galactic plane

=== Biology and medicine ===
* [[Cancer cluster]], in biomedicine, an occurrence of a greater-than-expected number of cancer cases
* [[Cluster headache]], a neurological disease that involves an immense degree of pain
* [[Cluster of differentiation]], protocol used for the identification and investigation of cell surface molecules present on white blood cells
* [[Winter cluster]], in beekeeping, a well-defined cluster of honey bees in cold temperatures
* [[Disease cluster]], a grouping of cases of disease
* [[Gene cluster]], a group of genes (or proteins, or metabolites) whose expression or concentration is similar across a range of conditions
* Cluster of microorganisms, as in a [[Colony (biology)#Microbial colonies|colony]]

=== Chemistry ===

* [[Cluster chemistry]], an array of bound atoms intermediate in character between a molecule and a solid

=== Computer science ===
* [[Computer cluster]], a set of computers that work together
* [[Data cluster]], a group of disk sectors used in a File Allocation Table

=== Economics ===

* [[Business cluster]], a geographic cluster of competitive businesses

*[[Cluster theory]], a theory that states concentrating industries in specific regions creates several advantages

=== Education ===

* [[CLUSTER]], the Consortium Linking Universities of Science and Technology for Education and Research (a collection of twelve [[Europe|European]] universities which focus on science and engineering)

=== Equipment ===
* [[Cluster bomb]], a type of air-dropped or ground-launched shells
* [[Instrument cluster]] of an automobile
* A bicycle [[cogset]], either a freewheel, or cassette
* The set of tubes attached to a cow's teats for [[automatic milking]]

=== Linguistics ===

* [[Consonant cluster]],  a group of [[Consonant|consonants]] which have no intervening [[vowel]]
* [[Language cluster]] or dialect cluster, a geographic distribution of languages

=== Math and statistics ===
* [[Cluster analysis]], a set of techniques for grouping a set of objects based on intrinsic similarities
* [[Cluster sampling]], a sampling technique used when "natural" groupings are evident in a statistical population
* [[Cluster graph]], in graph theory, a disjoint union of complete graphs
* Clusterable graph, in [[Balance theory#Signed graphs and social networks|balance theory]]
* [[Cluster algebra]], a class of commutative rings used in representation theory
* [[Cluster expansion]], a technique in statistical mechanics and quantum field theory

=== Physics ===

* [[Cluster (physics)]], a small group of atoms or molecules

=== Urban development ===

* [[Cluster home]], a type of housing development
* [[Research-intensive cluster]], a region with a high density of research-oriented organizations
* [[Urban agglomeration]], a cluster concept in urban development (a [[human settlement]] with a high [[population density]] and an [[infrastructure]] of [[built environment]])