Cluster

Cluster(s) may refer to:

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

Computer science

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

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

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
 * Cluster algebra, a class of commutative rings used in representation theory
 * Cluster expansion, a technique in statistical mechanics and quantum field theory

Other uses in science and technology

 * CLUSTER, the Consortium Linking Universities of Science and Technology for Education and Research
 * Cluster (physics), a small group of atoms or molecules
 * Cluster chemistry, an array of bound atoms intermediate in character between a molecule and a solid
 * Consonant cluster, in linguistics
 * Language cluster or dialect cluster, a geographic distribution of languages

Music

 * Tone cluster, a musical chord comprising at least three consecutive tones in a scale
 * Cluster (album), the 1971 eponymous album by the band Cluster
 * Cluster (band), a German electronic group
 * "Cluster", a track from the album Ben Bu Sarkiyi Sana Yazdim by Cem Adrian
 * "Cluster", a song by P-Model from the album Big Body
 * Cluster One, the first track on Pink Floyd's 1994 album The Division Bell
 * "Cluster", an extended play by the pop-punk band Waterparks

Other media

 * Cluster (novels) by Piers Anthony
 * Cluster, a poetry collection by Souvankham Thammavongsa
 * The Cluster, a character from the TV series Steven Universe

Urban development

 * Business cluster, a geographic cluster of competitive businesses
 * Research-intensive cluster, a region with a high density of research-oriented organizations
 * Cluster home, a type of housing development

Other uses

 * Cluster, Pleasants County, West Virginia
 * Cluster diagram, general type of diagram, which represents some kind of cluster
 * Clusterfuck or cluster, slang term for a messy situation, arising in the US Marine Corps
 * Clusters School of Digital Arts, an animation and visual effects training school