Affinity may refer to:

Commerce, finance and law

Affinity (law) In law and in cultural anthropology, affinity is the kinship relationship created or that exists between two people as a result of someone's marriage. It is the relationship which each party to a marriage has to the relations of the other par ...

, kinship by marriage *

Affinity analysis Affinity analysis falls under the umbrella term of data mining which uncovers meaningful correlations between different entities according to their co-occurrence in a data set. In almost all systems and processes, the application of affinity anal ...

, a market research and business management technique * Affinity Credit Union, a Saskatchewan-based credit union *

Affinity Equity Partners Affinity Equity Partners is one of the largest dedicated Asian private equity firms and focuses on leveraged buyout and growth capital transactions. Affinity operates as a Pan-Asian firm focusing on investment opportunities in Korea, Southeast A ...

, an Asian private equity firm * Affinity fraud, a type of scam targeting a specific demographic * Affinity marketing, a method of extending market reach by forming partnerships and cross-selling relationships

Religion and belief

Affinity (canon law) In Catholic canon law, affinity is an impediment to marriage of a couple due to the relationship which either party has as a result of a kinship relationship created by another marriage or as a result of extramarital intercourse. The relationship ...

, a kinship arising from the sexual intercourse of a man and a woman * Affinity (Christian organisation), network of conservative evangelical churches and Christian agencies * Affinity group, a private, non-commercial and non-governmental organisation formed around a shared interest or goal

Science and technology

* ''Affinity'', the UK's first road-legal solar car, built by Cambridge University Eco Racing * Affinity (mathematics), an affine transformation preserving collinearity *

Affinity (pharmacology) In biochemistry and pharmacology, a ligand is a substance that forms a complex with a biomolecule to serve a biological purpose. The etymology stems from ''ligare'', which means 'to bind'. In protein-ligand binding, the ligand is usually a mo ...

, a characterisation of protein-ligand binding strength *

Affinity (sociology) Affinity in terms of sociology, refers to "kinship of spirit", interest and other interpersonal commonalities. Affinity is characterized by high levels of intimacy and sharing, usually in close groups, also known as affinity groups. It differs f ...

, a shared interest and commitment between persons in groups and/or willingness to associate *

Affinity (taxonomy) Affinity (taxonomy) – mainly in life sciences or natural history – refers to resemblance suggesting a common descent, phylogenetic relationship, or type. The term does, however, have broader application, such as in geology (for example, in d ...

, a suggestion of common descent or type *

Affinity chromatography Affinity chromatography is a method of separating a biomolecule from a mixture, based on a highly specific macromolecular binding interaction between the biomolecule and another substance. The specific type of binding interaction depends on the ...

, method of separating a biomolecule from a mixture *

Affinity electrophoresis Affinity electrophoresis is a general name for many analytical methods used in biochemistry and biotechnology. Both qualitative and quantitative information may be obtained through affinity electrophoresis. The methods include the so-called elect ...

, general name for many analytical methods used in biochemistry and biotechnology *

Affinity laws The affinity laws (also known as the "Fan Laws" or "Pump Laws") for pumps/fans are used in hydraulics, hydronics and/or HVAC to express the relationship between variables involved in pump or fan performance (such as head, volumetric flow rate, s ...

, laws used in hydraulics to express relationships between variables involved in fan or pump performance *

Binding affinity In biochemistry and pharmacology, a ligand is a substance that forms a complex with a biomolecule to serve a biological purpose. The etymology stems from ''ligare'', which means 'to bind'. In protein-ligand binding, the ligand is usually a mo ...

, a measure of the interaction of ligands with their binding sites *

Chemical affinity In chemical physics and physical chemistry, chemical affinity is the electronic property by which dissimilar chemical species are capable of forming chemical compounds. Chemical affinity can also refer to the tendency of an atom or compound to comb ...

, used to describe or characterise elements' or compounds' readiness to form bonds *

Electron affinity The electron affinity (''E''ea) of an atom or molecule is defined as the amount of energy released when an electron attaches to a neutral atom or molecule in the gaseous state to form an anion. ::X(g) + e− → X−(g) + energy Note that this is ...

, energy released on formation of anions * Processor affinity, a computing term for the assignment of a task to a given core of a multicore CPU * Serif Europe's Affinity series of programs ** Affinity Designer, a vector illustration editor **

Affinity Photo Affinity Photo is a raster graphics editor developed by Serif Ltd. for iOS, macOS, and Windows, alongside Affinity Designer and Affinity Publisher. Development of Affinity Photo started in 2009 as a raster graphics editor for macOS. Its first ...

, a raster graphics editor ** Affinity Publisher, a desktop publishing application

Media-related

Music

* Affinity (band), a jazz/rock band ** ''Affinity'' (Affinity album) * ''Affinity'' (Bill Evans album) * ''Affinity'' (Haken album) * ''Affinity'' (Oscar Peterson album) * ''Affinity'' (EP), a 2013 EP by the English band Press to Meco * Johnny Alegre A, a jazz collective based in Manila

Other media

* ''Affinity'' (novel), a 1999 novel by Sarah Waters ** ''Affinity'' (film), a 2008 feature film based on the novel * "Affinity" (''Stargate SG-1''), an episode from season 8 of the TV sci-fi spin-off series ''Stargate SG-1'' * ''

Elective Affinities ''Elective Affinities'' (German: ''Die Wahlverwandtschaften''), also translated under the title ''Kindred by Choice'', is the third novel by Johann Wolfgang von Goethe, published in 1809. Situated around the city of Weimar, the book relates the ...

'', a novel by Goethe

Other uses

* Affinity (medieval), late medieval retainers of a monarch in "bastard feudalism" * Affinity, West Virginia