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Order, ORDER or Orders may refer to: * A socio-political or established or existing order, e.g.
World order In international relations, international order refers to patterned or structured relationships between actors on the international level. Definition David A. Lake, David Lake, Lisa Martin (political scientist), Lisa Martin and Thomas Risse d ...
, Ancien Regime, Pax Britannica * Categorization, the process in which ideas and objects are recognized, differentiated, and understood * Heterarchy, a system of organization wherein the elements have the potential to be ranked a number of different ways *
Hierarchy A hierarchy (from Ancient Greek, Greek: , from , 'president of sacred rites') is an arrangement of items (objects, names, values, categories, etc.) that are represented as being "above", "below", or "at the same level as" one another. Hierarchy ...
, an arrangement of items that are represented as being "above", "below", or "at the same level as" one another * an action or inaction that must be obeyed, mandated by someone in authority


People

* Orders (surname)


Arts, entertainment, and media

* ''Order'' (film), a 2005 Russian film * ''Order'' (album), a 2009 album by Maroon * "Order", a 2016 song from '' Brand New Maid'' by Band-Maid * ''Orders'' (1974 film), a film by Michel Brault * "Orders" (''Star Wars: The Clone Wars'')


Business

* Blanket order, a purchase order to allow multiple delivery dates over a period of time *
Money order A money order is a directive to pay a pre-specified amount of money from prepaid funds, making it a more trusted method of payment than a cheque. History Systems similar to modern money orders can be traced back centuries. Paper documents known ...
or postal order, a financial instrument usually intended for sending money through the mail * Purchase order, a document issued by a buyer to a seller, indicating types, quantities, and agreed prices * Sales order, an order issued by a business or trader to a customer


Exclusive organisations

*
Order (distinction) An order is a visible honour awarded by a sovereign state, monarch, dynastic house or organisation to a person, typically in recognition of individual merit, that often comes with distinctive insignia such as collars, medals, badges, and ...
, a visible honour in society ** Dynastic order of a presently or formerly sovereign royal house ** National order of a sovereign state ** Order of merit of a state or other entity **
Order of precedence An order of precedence is a sequential hierarchy of importance applied to individuals, groups, or organizations. For individuals, it is most often used for diplomats in attendance at very formal occasions. It can also be used in the context of ...
, a sequential hierarchy of the nominal importance of items *
Fraternal order A fraternal order is a voluntary membership group organised as an order, with an initiation ritual and traits alluding to religious, chivalric or pseudo-chivalric orders, guilds, or secret societies. Fraternal orders typically have secular p ...
*
Military order (religious society) A military order () is a Christianity, Christian religious society of Knight, knights. The original military orders were the Knights Templar, the Knights Hospitaller, the Order of the Holy Sepulchre (Catholic), Order of the Holy Sepulchre, the ...
, established in the era of the Crusades *
Order of chivalry An order of chivalry, order of knighthood, chivalric order, or equestrian order is a society, fellowship and college of knights, typically founded during or inspired by the original Catholic military orders of the Crusades ( 1099–1291) and ...
, established since the Middle Ages


Legal and political terminology

*
Court order A court order is an official proclamation by a judge (or panel of judges) that defines the legal relationships between the parties to a hearing, a trial, an appeal or other court proceedings. Such ruling requires or authorizes the carrying o ...
, made by a judge, e.g., a restraining order *
Executive order (disambiguation) An executive order is a directive issued by the President of the United States. Executive order may also refer to: Government * Executive order (Philippines), a directive issued by the President of the Philippines * State executive order, a di ...
*
Law and order (politics) In modern politics, "law and order" is an ideological approach focusing on harsher enforcement and penalties as ways to reduce crime. Penalties for perpetrators of disorder may include longer terms of imprisonment, mandatory sentencing, three ...
, approach focusing on harsher enforcement and penalties as ways to reduce crime *
Public-order crime In criminology, public-order crime is defined by Siegel (2004) as "crime which involves acts that interfere with the operations of society and the ability of people to function efficiently", i.e., it is behaviour that has been labelled criminal ...
, type of crime that runs contrary to social order **
Organized crime Organized crime is a category of transnational organized crime, transnational, national, or local group of centralized enterprises run to engage in illegal activity, most commonly for profit. While organized crime is generally thought of as a f ...
, groupings of highly centralized criminal enterprises *
Social order The term social order can be used in two senses: In the first sense, it refers to a particular system of social structures and institutions. Examples are the ancient, the feudal, and the capitalist social order. In the second sense, social orde ...
, set or system of linked social structures, institutions, relations, customs, values and practices * Statutory instrument, type of delegated legislation * Professional order, organization which comprises all the members of the same profession


Military

* Military order (disambiguation) * Military order (instruction), binding instruction given by a senior rank to a junior rank in a military context ** General order, a published directive from a commander ** Standing order (disambiguation) * An
order of chivalry An order of chivalry, order of knighthood, chivalric order, or equestrian order is a society, fellowship and college of knights, typically founded during or inspired by the original Catholic military orders of the Crusades ( 1099–1291) and ...
, if membership is conferred on military personnel as a result of valorous, exemplary or distinguished service * Tactical formation, an arrangement or deployment of moving military forces


Philosophy

* Great order of being, a mediaeval Christian conceptualisation of the physical world * Order (logic), a property used to characterize logical systems * Natural order (philosophy), the moral source from which natural law seeks to derive its authority


Religion

* Ecclesiastical decoration, order or a decoration conferred by a head of a church * Holy orders, the rite or sacrament in which clergy are ordained * Monastic order, a religious way of life in which one renounces worldly pursuits to devote oneself fully to spiritual work * Order of Mass, an outline of a Mass celebration * Religious order, a community or organization set apart from the general society for devotion to a religious practice ** Religious order (Catholic), a religious order in the context of the Roman Catholic Church *** Canon regular, or canonical order, a class of religious orders for priests in the Catholic Church


Science and technology


Biology and healthcare

*
Order (biology) Order () is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between family and class. In biological classification, the order is a taxonomic rank used in the classification of organisms and recognize ...
, a taxonomic classification of organisms by rank ** Order, in phytosociology, an ecological grouping of plants, between alliance and class ** '' Ordo naturalis'' (natural order), an outdated rank in biology, equivalent to the modern rank of family * Order, in
medicine Medicine is the science and Praxis (process), practice of caring for patients, managing the Medical diagnosis, diagnosis, prognosis, Preventive medicine, prevention, therapy, treatment, Palliative care, palliation of their injury or disease, ...
, refers to a formal request made by authorized health practitioners to carry out a specific clinical action concerning diagnosis or treatment


Computing

* Order of computation, the computational complexity in the analysis of algorithms ** Big O notation, notation describing limiting behavior * Z-order, which graphics cover up others on computer screens


Mathematics

* ''Order'' (journal), an academic journal on order theory * Order, an arrangement of items in
sequence In mathematics, a sequence is an enumerated collection of objects in which repetitions are allowed and order matters. Like a set, it contains members (also called ''elements'', or ''terms''). The number of elements (possibly infinite) is cal ...
* Order, the result of enumeration of a set of items * Order, a mathematical structure modeling sequenced items, dealt with in order theory * Order of hierarchical complexity, quantified by the model of hierarchical complexity, the ordinal complexity of tasks that are addressed * Ordered set, an ordered structure, in mathematics * Ordinate in mathematics, the ''y'' element of an ordered pair (''x'', ''y'') * Partially ordered set ** Complete partial order * Permutation, the act of arranging all the members of a set into some sequence or order *
Ranking A ranking is a relationship between a set of items, often recorded in a list, such that, for any two items, the first is either "ranked higher than", "ranked lower than", or "ranked equal to" the second. In mathematics, this is known as a weak ...
* Stochastic ordering of random variables or probability distributions


Physics

* Implicate and explicate order, ontological concepts for quantum theory * Order and disorder (physics), measured by an order parameter or more generally by entropy * Order, optics, the category number of lighthouse Fresnel lenses, defining size and focal length * Topological order in quantum mechanics, an organized quantum state


Signal processing

* First-order hold, mathematical model of the practical reconstruction of sampled signals * Modulation order, the number of different symbols that can be sent using a given modulation * Polynomial order, of a filter transfer function


Other uses in science and technology

* ''ORDER'' (spacecraft), a space debris removal transport satellite * Order (mouldings), each of a series of recessed arches and supports around a doorway or similar feature * Classical order, architectonic orders in architecture * Collation, the ordering of information ** Alphabetical order, the ordering of letters * Order of reaction, a concept of chemical kinetics * Spontaneous order, the natural emergence of structure in systems * Stream order, used to define river networks based on a hierarchy of tributaries


See also

* * Chaos (disambiguation) *
Classification Classification is the activity of assigning objects to some pre-existing classes or categories. This is distinct from the task of establishing the classes themselves (for example through cluster analysis). Examples include diagnostic tests, identif ...
* Coordination (disambiguation) * Disorder (disambiguation) * Ordinal (disambiguation) * Organization (disambiguation) * Structure (disambiguation) {{disambiguation