Purity may refer to:

Books

* ''Pureza'' (novel), a 1937 Brazilian novel by José Lins do Rego * ''Purity'' (novel), a 2015 novel by Jonathan Franzen ** ''Purity'' (TV series), a TV series based on the novel *''Purity'', a 2012 novel by Jackson Pearce *''Purity'', a 1998 novel by

Shaun Hutson Shaun Hutson (born 1958) is a British novelist in the horror and crime genres. Under his own name and various pen names, he has written at least thirty novels. Background A native of Letchworth Garden City in Hertfordshire, England, Hutson now ...

*''Purity'', a 2007 play by

Thomas Bradshaw (playwright) Thomas Bradshaw is an American playwright whose work has been extensively reviewed. He is the recipient of PEN/Laura Pels International Foundation for Theater Award as the Emerging American Playwright and of the Foundation for Contemporary Arts Gr ...

*" Cleanness", also known as "Purity", a 14th-century poem

Companies

* Purity Dairies, a dairy company in Nashville, Tennessee, United States * Purity Factories, a food processing company in St. John's, Newfoundland and Labrador, Canada * Purity Distilling Company, an alcohol manufacturer involved in the Boston Molasses Disaster in the U.S. * Purity FM, a Nigerian radio station *Purity, a former supermarket brand owned by

Woolworths Supermarkets Woolworths (colloquially known as "Woolies") is an Australian supermarket chain owned by Woolworths Group (Australia), Woolworths Group. Founded in 1924, Woolworths is currently Australia's largest supermarket chain with a market share of 32.5% ...

(Australia)

Film

* ''Purity'' (film), a 1916 motion picture *Purity by Anat Zuria * Black oil (''The X-Files'') (also known as Purity), a fictional alien virus in the TV series ''The X-Files''

Music

* "Purity" (Slipknot song), 1999 * Purity (ASAP Rocky song), 2018 * ''Purity'' (album), a 2003 album by Hate Forest

Places

* Purity Mountain, a summit in Canada

Religion

*Purity, the absence of

vice A vice is a practice, behaviour, Habit (psychology), habit or item generally considered morally wrong in the associated society. In more minor usage, vice can refer to a fault, a negative character trait, a defect, an infirmity, or a bad or unhe ...

in human character, synonymous with

chastity Chastity, also known as purity, is a virtue related to temperance. Someone who is ''chaste'' refrains from sexual activity that is considered immoral or from any sexual activity, according to their state of life. In some contexts, for exampl ...

when used in reference to a person's sexual nature *

Ritual purification Ritual purification is a ritual prescribed by a religion through which a person is considered to be freed of ''uncleanliness'', especially prior to the worship of a deity, and ritual purity is a state of ritual cleanliness. Ritual purification ...

, a feature of many religions *

Purity in Buddhism Purity (Pali: ''Vissudhi'') is an important concept within much of Theravada and Mahayana Buddhism, although the implications of the resultant moral purification may be viewed differently in the varying traditions. The aim is to purify the person ...

, a spiritual purity of character or essence *

Ritual purity in Islam Purity () is an essential aspect of Islam. It is the opposite of ''najāsa'', the state of being ritually impure. It is achieved by first removing physical impurities (for example, urine) from the body, and then removing ritual impurity through ...

, both a literal and metaphorical cleanliness

Science

*Purity, the absence of

impurity In chemistry and materials science, impurities are chemical substances inside a confined amount of liquid, gas, or solid. They differ from the chemical composition of the material or compound. Firstly, a pure chemical should appear in at least on ...

contaminant Contamination is the presence of a constituent, impurity, or some other undesirable element that renders something unsuitable, unfit or harmful for the physical body, natural environment, wiktionary:Workplace, workplace, etc. Types of contamina ...

s in a substance; for example,

Chemical purity In chemistry, chemical purity is the measurement of the amount of impurities found in a sample. Several grades of purity are used by the scientific, pharmaceutical, and industrial communities. Some of the commonly used grades of purity include ...

*Purity, the proportion of a named

pure substance A chemical substance is a unique form of matter with constant chemical composition and characteristic properties. Chemical substances may take the form of a single element or chemical compounds. If two or more chemical substances can be com ...

in a sample (by weight, mass, volume, or count) *

Fineness The fineness of a precious metal object (coin, bar, jewelry, etc.) represents the weight of ''fine metal'' therein, in proportion to the total weight which includes alloying base metals and any impurities. Alloy metals are added to increase hard ...

, several units of purity of precious metals *

Nine (purity) Nines are an informal logarithmic notation for proportions very near to one or, equivalently, percentages very near 100%. Put simply, "nines" are the number of consecutive nines in a percentage such as 99% (two nines) or a decimal fraction such a ...

, an informal unit of purity *Purity, the

colorfulness Colorfulness, chroma and saturation are attributes of perceived color relating to chromatic intensity. As defined formally by the International Commission on Illumination (CIE) they respectively describe three different aspects of chromatic ...

of a light source *

Purity (quantum mechanics) In quantum mechanics, and especially quantum information theory, the purity of a normalized quantum state is a scalar defined as \gamma \, \equiv \, \operatorname(\rho^2) where \rho \, is the density matrix of the state and \operatorname is the t ...

, a measure of correlation between a system and its environment *

Purity (algebraic geometry) In the mathematical field of algebraic geometry, purity is a theme covering a number of results and conjectures, which collectively address the question of proving that "when something happens, it happens in a particular codimension". Purity of th ...

, a lack of unmixed-ness