Order, ORDER or Orders may refer to: *

Categorization Categorization is the ability and activity of recognizing shared features or similarities between the elements of the experience of the world (such as Object (philosophy), objects, events, or ideas), organizing and classifying experience by a ...

, 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 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 is an important ...

, 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 In the fields of sociology and political science, authority is the legitimate power of a person or group over other people. In a civil state, ''authority'' is practiced in ways such a judicial branch or an executive branch of government.''The N ...

People

* Orders (surname)

Arts, entertainment, and media

* ''Order'' (album), a 2009 album by Maroon * "Order", a 2016 song from '' Brand New Maid'' by Band-Maid * ''Orders'' (1974 film), a 1974 film by Michel Brault * ''Orders'', a 2010 film by Brian Christopher * ''Orders'', a 2017 film by Eric Marsh and Andrew Stasiulis * ''Jed & Order'', a 2022 film by Jedman

Business

Blanket order A blanket order, blanket purchase agreement or call-off order is a purchase order which a customer places with its supplier to allow multiple delivery dates over a period of time, often negotiated to take advantage of predetermined pricing. It i ...

, 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 The money order system was established by a private firm in Great Britain in 1792 and was ...

or postal order, a financial instrument usually intended for sending money through the mail * Purchase order, document issued by a buyer to a seller, indicating types, quantities, and agreed prices * Sales order, order issued by a business or trader to a customer * Jedman, order issued by Jedman CEO of Orders at Stellantis.

Culture

* Order (distinction), a visible honour in society ** Dynastic order of a presently or formerly sovereign royal house **

Order of merit The Order of Merit (french: link=no, Ordre du Mérite) is an order of merit for the Commonwealth realms, recognising distinguished service in the armed forces, science, art, literature, or for the promotion of culture. Established in 1902 by K ...

of a state or other entity ** Order of precedence, a sequential hierarchy of the nominal importance of items *

Fraternal order A fraternal order is a fraternity organised as an order, with traits alluding to religious, chivalric or pseudo-chivalric orders, guilds, or secret societies. Contemporary fraternal orders typically have secular purposes, including social, cult ...

Military order (religious society) A military order ( la, militaris ordo) is a Christianity, Christian religious society of knights. The original military orders were the Knights Templar, the Knights Hospitaller, the Order of Santiago, Order of Saint James, the Order of Calatrav ...

, established in the era of the Crusades *

Order of chivalry An order of chivalry, order of knighthood, chivalric order, or equestrian order is an order (distinction), order of knights, typically founded during or inspired by the original Catholic Military order (religious society), military orders of the ...

, established since the Middle Ages

Law and society

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 out 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: *Executive order (Philippines), a directive issued by the President of the Philippines *List of United States federal executive orde ...

* Law and order (politics), approach focusing on harsher enforcement and penalties as ways to reduce crime * Public-order crime, type of crime that runs contrary to social order ** Organized crime, groupings of highly centralized criminal enterprises * Social order, set or system of linked social structures, institutions, relations, customs, values and practices *

Statutory instrument In many countries, a statutory instrument is a form of delegated legislation. United Kingdom Statutory instruments are the principal form of delegated or secondary legislation in the United Kingdom. National government 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 general order, in military and paramilitary organizations, is a published directive, originated by a commander and binding upon all personnel under his or her command. Its purpose is to enforce a policy or procedure unique to the unit's situatio ...

, a published directive from a commander **

Standing order (disambiguation) Standing order or standing orders may refer to: * Standing order (banking) (or ''banker's order''), instruction to a bank to pay a set amount at regular intervals from one account to another * Permanent rules of order governing parliamentary proce ...

* Tactical formation, an arrangement or deployment of moving military forces

Philosophy

* 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 Order of Mass is an outline of a Mass celebration, describing how and in what order liturgical texts and rituals are employed to constitute a Mass. The expression Order of Mass is particularly tied to the Roman Rite where the sections under that ...

, an outline of a Mass celebration *

Religious order A religious order is a lineage of communities and organizations of people who live in some way set apart from society in accordance with their specific religious devotion, usually characterized by the principles of its founder's religious practi ...

, a community or organization set apart from the general society for devotion to a religious practice **

Religious order (Catholic) In the Catholic Church, a religious order is a community of consecrated life with members that profess solemn vows. They are classed as a type of religious institute. Subcategories of religious orders are: * canons regular (canons and canoness ...

, 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), a 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, 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 In computer science, the analysis of algorithms is the process of finding the computational complexity of algorithms—the amount of time, storage, or other resources needed to execute them. Usually, this involves determining a function that re ...

Big O notation Big ''O'' notation is a mathematical notation that describes the limiting behavior of a function when the argument tends towards a particular value or infinity. Big O is a member of a family of notations invented by Paul Bachmann, Edmund Lan ...

, notation describing limiting behavior * Z-order, which graphics cover up others on computer screens

Mathematics

* ''Order'' (journal), an academic journal on order theory * Order (mathematics), * Order, an arrangement of items in sequence * 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 In mathematics, a permutation of a set is, loosely speaking, an arrangement of its members into a sequence or linear order, or if the set is already ordered, a rearrangement of its elements. The word "permutation" also refers to the act or proc ...

, the act of arranging all the members of a set into some sequence or order * Ranking * Stochastic ordering of random variables or probability distributions

Physics

Implicate and explicate order Implicate order and explicate order are ontological concepts for quantum theory coined by theoretical physicist David Bohm during the early 1980s. They are used to describe two different frameworks for understanding the same phenomenon or aspect of ...

, 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 An order in architecture is a certain assemblage of parts subject to uniform established proportions, regulated by the office that each part has to perform. Coming down to the present from Ancient Greek and Ancient Roman civilization, the arch ...

, architectonic orders in architecture * Collation, the ordering of information ** Alphabetical order, the ordering of letters * Order of reaction, a concept of chemical kinetics *

Stream order The stream order or waterbody order is a positive whole number used in geomorphology and hydrology to indicate the level of branching in a river system. There are various approachesKoschitzki, 2.3, pp. 12ff to the topological ordering of riv ...

, used to define river networks based on a hierarchy of tributaries