QS may refer to:

Business

QS mark The QS mark (from Qiye Shipin shengchan xuke, meaning authorised manufacturing for enterprises, formally the Industrial Product Manufacturing License) is a Chinese quality and safety mark for food, beverages and other products. Introduced in 2003 ...

(for "quality and safety"), on Chinese products *

Quacquarelli Symonds Quacquarelli Symonds (QS) is a British company specialising in the analysis of higher education institutions around the world. The company was founded in 1990 by Nunzio Quacquarelli. History On 5 October 2017, QS Quacquarelli Symonds acquired Hob ...

, an education and careers networking company **''

QS World University Rankings ''QS World University Rankings'' is an annual publication of university rankings by Quacquarelli Symonds (QS). The QS system comprises three parts: the global overall ranking, the subject rankings (which name the world's top universities for the ...

'', an annual publication * Quality System (QS) Regulation, a business process *

Quantity surveyor A quantity surveyor (QS) is a construction industry professional with expert knowledge on construction costs and contracts. Qualified professional quantity surveyors are known as Chartered Surveyors (Members and Fellows of RICS) in the UK and Cer ...

, a professional in the construction industry concerned with costs and contracts * Travel Service (IATA airline designator QS) *

Quadraphonic Quadraphonic (or quadrophonic and sometimes quadrasonic) sound – equivalent to what is now called 4.0 surround sound – uses four audio channels in which speakers are positioned at the four corners of a listening space. The system allows for th ...

sound, the Sansui QS Regular Matrix system

Politics

Québec solidaire Québec solidaire (QS; ) is a democratic socialist and sovereigntist political party in Quebec, Canada. The party and media outlets in Canada usually use the name "Québec solidaire" in both French and English, but the party's name is sometimes ...

, a political party in Quebec, Canada * Quis separabit?, an Irish Loyalist motto

Science, technology, and mathematics

Health and medicine

* ATCvet code QS ''Sensory organs'', a section of the Anatomical Therapeutic Chemical Classification System for veterinary medicinal products *''

Quantum satis Quantum satis (abbreviation q.s. or Q.S.) is a Latin term meaning the amount which is enough. It has its origins as a quantity specification in medicine and pharmacology, where a similar term ''quantum sufficit'' ("as much as is sufficient") has b ...

'', a Latin term meaning "the amount which is needed", used in food and drug regulation *

Quinolinate synthase Quinolinate synthase (, ''NadA'', ''QS'', ''quinolinate synthetase'') is an enzyme with systematic name ''glycerone phosphate:iminosuccinate alkyltransferase (cyclizing)''. This enzyme catalyses the following chemical reaction : glycerone phosph ...

, an enzyme

Mathematics

Quadratic sieve The quadratic sieve algorithm (QS) is an integer factorization algorithm and, in practice, the second fastest method known (after the general number field sieve). It is still the fastest for integers under 100 decimal digits or so, and is considerab ...

, an integer factorization algorithm *

Quicksort Quicksort is an efficient, general-purpose sorting algorithm. Quicksort was developed by British computer scientist Tony Hoare in 1959 and published in 1961, it is still a commonly used algorithm for sorting. Overall, it is slightly faster than ...

, a sorting algorithm

Other uses in science and technology

Quadraphonic sound Quadraphonic (or quadrophonic and sometimes quadrasonic) sound – equivalent to what is now called 4.0 surround sound – uses four audio channels in which speakers are positioned at the four corners of a listening space. The system allows for th ...

, or "Quadphonic Synthesizer", a matrix quadraphonic gramophone record format developed by Sansui *

Quality Score Quality Score is a metric used by Google, Yahoo! (called ''Quality Index''), Facebook (called Ad Quality) and Bing that influences the ad rank and cost per click (CPC) of ads. To determine the position of the ad on a search engine, each ad is al ...

, a variable used by search engines to set the rank and cost of ads *

Quantified self The quantified self refers both to the cultural phenomenon of self-tracking with technology and to a community of users and makers of self-tracking tools who share an interest in "self-knowledge through numbers". Quantified self practices overlap ...

, a movement to incorporate technology into data acquisition on aspects of a person's daily life *

Quicksand Quicksand is a colloid A colloid is a mixture in which one substance consisting of microscopically dispersed insoluble particles is suspended throughout another substance. Some definitions specify that the particles must be dispersed in a ...

, a colloid hydrogel consisting of fine granular material and water *

Quorum sensing In biology, quorum sensing or quorum signalling (QS) is the ability to detect and respond to cell population density by gene regulation. As one example, QS enables bacteria to restrict the expression of specific genes to the high cell densities at ...

, a system of interaction in natural and synthetic populations

Sport

Quality start In baseball, a quality start is a statistic for a starting pitcher defined as a game in which the pitcher completes at least six innings and permits no more than three earned runs. The quality start has effectively replaced the 'complete game' a ...

, a baseball statistic calculated for starting pitchers *

Qualcomm Stadium San Diego Stadium was a multi-purpose stadium on the west coast of the United States, in San Diego, California. The stadium opened in 1967 as San Diego Stadium and was known as Jack Murphy Stadium from 1981 to 1997. From 1997 to 2017, the stadiu ...

, a stadium in San Diego, California

Other uses

Queen's Scout A King's Scout is a Scout who has attained the King's Scout Award. The King's Scout Award is the highest youth award achievable in the Scouting movement in the Commonwealth realms, including the United Kingdom, Canada (Queen's Venturer Award ...

, a scout who has attained the Queen's Scout Award *

Queen's Serjeant A Serjeant-at-Law (SL), commonly known simply as a Serjeant, was a member of an order of barristers at the Barristers in England and Wales, English and Irish Bar. The position of Serjeant-at-Law (''servientes ad legem''), or Sergeant-Counter, ...

, an obsolete legal position in the United Kingdom {{disambiguation