may refer to:

Science and technology

Astronomy

* Cluster (spacecraft), constellation of four European Space Agency spacecraft * Asteroid cluster, a small asteroid family *

Cluster II (spacecraft) Cluster II is a space mission of the European Space Agency, with NASA participation, to study the Earth's magnetosphere over the course of nearly two solar cycles. The mission is composed of four identical spacecraft flying in a tetrahedral form ...

, a European Space Agency mission to study the magnetosphere *

Galaxy cluster A galaxy cluster, or a cluster of galaxies, is a structure that consists of anywhere from hundreds to thousands of galaxies that are bound together by gravity, with typical masses ranging from 1014 to 1015 solar masses. They are the second-lar ...

, 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 globular cluster is a spheroidal conglomeration of stars. Globular clusters are bound together by gravity, with a higher concentration of stars towards their centers. They can contain anywhere from tens of thousands to many millions of membe ...

, a spherical collection of stars whose orbit is either partially or completely in the halo of the parent galaxy **

Open cluster An open cluster is a type of star cluster made of up to a few thousand stars that were formed from the same giant molecular cloud and have roughly the same age. More than 1,100 open clusters have been discovered within the Milky Way galaxy, an ...

, 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 Cluster headache (CH) is a neurological disorder characterized by recurrent severe headaches on one side of the head, typically around the eye(s). There is often accompanying eye watering, nasal congestion, or swelling around the eye on the af ...

, a neurological disease that involves an immense degree of pain *

Cluster of differentiation The cluster of differentiation (also known as cluster of designation or classification determinant and often abbreviated as CD) is a protocol used for the identification and investigation of cell surface molecules providing targets for immunophen ...

, protocol used for the identification and investigation of cell surface molecules present on white blood cells *

Winter cluster In beekeeping, a winter cluster is a well-defined cluster of honey bees that forms inside a beehive when the air temperature dips below 10 to 14 °C (50 to 57 F). Honey bees are one of but a few kinds of insects that survive the winter as a co ...

, in beekeeping, a well-defined cluster of honey bees in cold temperatures *

Disease cluster A disease cluster is an unusually large aggregation of a relatively uncommon medical condition or event within a particular geographical location or period. Recognition of a cluster depends on its size being seen as greater than would be expected ...

, a grouping of cases of disease *

Gene cluster A gene family is a set of homologous genes within one organism. A gene cluster is a group of two or more genes found within an organism's DNA that encode similar polypeptides, or proteins, which collectively share a generalized function and are ...

, 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 In modern parlance, a colony is a territory subject to a form of foreign rule. Though dominated by the foreign colonizers, colonies remain separate from the administration of the original country of the colonizers, the '' metropolitan state' ...

Computer science

* Computer cluster, a set of computers that work together *

Data cluster In computer disk storage, a sector is a subdivision of a track on a magnetic disk or optical disc. Each sector stores a fixed amount of user-accessible data, traditionally 512 bytes for hard disk drives (HDDs) and 2048 bytes for CD-ROMs and DVD ...

, a group of disk sectors used in a File Allocation Table

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 * Clusterable graph, in

balance theory In the psychology of motivation, balance theory is a theory of attitude change, proposed by Fritz Heider. It conceptualizes the cognitive consistency motive as a drive toward psychological balance. The consistency motive is the urge to maintain o ...

Other uses in science and technology

* CLUSTER, the Consortium Linking Universities of Science and Technology for Education and Research *

Cluster (physics) In physics, the term clusters denotes small, polyatomic particles. As a rule of thumb, any particle made of between 3×100 and 3×107 atoms is considered a cluster. The term can also refer to the organization of protons and neutrons within an ato ...

, a small group of atoms or molecules * Cluster bomb, a type of air-dropped or ground-launched shells *

Cluster chemistry In chemistry, an atom cluster (or simply cluster) is an ensemble of bound atoms or molecules that is intermediate in size between a simple molecule and a nanoparticle; that is, up to a few nanometers (nm) in diameter. The term ''microcluster ...

, an array of bound atoms intermediate in character between a molecule and a solid *

Consonant cluster In linguistics, a consonant cluster, consonant sequence or consonant compound, is a group of consonants which have no intervening vowel. In English, for example, the groups and are consonant clusters in the word ''splits''. In the education fie ...

, in linguistics *

Language cluster A dialect continuum or dialect chain is a series of language varieties spoken across some geographical area such that neighboring varieties are mutually intelligible, but the differences accumulate over distance so that widely separated varie ...

or dialect cluster, a geographic distribution of languages *

Instrument cluster For business applications, see Dashboard (business). A dashboard (also called dash, instrument panel (IP), or fascia) is a control panel set within the central console of a vehicle or small aircraft. Usually located directly ahead of the drive ...

of an automobile * A bicycle

cogset On a bicycle, the cassette or cluster is the set of multiple sprockets that attaches to the hub on the rear wheel. A cogset works with a rear derailleur to provide multiple gear ratios to the rider. Cassettes come in two varieties, freewheels ...

, either a freewheel, or cassette * The set of tubes attached to a cow's teats for automatic milking

Arts and media

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) Cluster were a German musical duo consisting of Hans-Joachim Roedelius and Dieter Moebius, formed in 1971 and associated with West Germany's krautrock and kosmische music scenes.Bush, John. Allmusic: Cluster Retrieved 24 February 2005. Born ...

, a German electronic group * "Cluster", a track from the album ''

Ben Bu Sarkiyi Sana Yazdim Ben is frequently used as a shortened version of the given names Benjamin, Benedict, Bennett or Benson, and is also a given name in its own right. Ben (in he, בֶּן, ''son of'') forms part of Hebrew surnames, e.g. Abraham ben Abraham ( he, ...

'' 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 business cluster is a geographic concentration of interconnected businesses, suppliers, and associated institutions in a particular field. Clusters are considered to increase the productivity with which companies can compete, nationally and gl ...

, a geographic cluster of competitive businesses *

Research-intensive cluster Research-intensive clusters (RICs) are regions with a high density of research-oriented organizations. These regions may be informally designated, or may be represented by a formal association. Member organizations are often universities, business ...

, 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 is an unincorporated community in Pleasants County, West Virginia West Virginia is a state in the Appalachian, Mid-Atlantic and Southeastern regions of the United States.The Census Bureau and the Association of American Geogra ...

Cluster diagram A Cluster diagram or ''clustering diagram'' is a general type of diagram, which represents some kind of cluster. A cluster in general is a group or bunch of several discrete items that are close to each other. The cluster diagram figures a cluste ...

, 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 Clusters College For Media & Design/Clusters School of Digital Arts is a film, visual effects, television, animation and media arts institute in India, providing education in technical aspects of the media and entertainment industry. See also ...

, an animation and visual effects training school