Order

Order or ORDER or Orders may refer to:

• Orderliness, a desire for organization
• 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, an arrangement of items that are represented as being "above", "below", or "at the same level as" one another

People

• Orders, a surname

Arts, entertainment, and media

• Order (album), a 2009 album by Maroon
• "Order", a 2016 song from Brand New Maid by Band-Maid
• Orders (film), a 1974 film by Michel Brault
• The Order of Odd-Fish, a 2008 children's novel by James Kennedy

Culture

• Order (distinction), is a visible honour in society
  • Dynastic order of a presently or formerly sovereign royal house
  • Order of merit of a state or other entity
  • Order of precedence, a sequential hierarchy of the nominal importance of items, often people
• Fraternal order
• Military order (religious society), established in the era of the crusades
• Order of chivalry, established since the Middle Ages

Law and society

• Court order, made by a judge, e.g., a restraining order
• Executive order (disambiguation), issued by the executive branch of government
• Law and order (politics)
• Public-order crime
  • Organized crime
• Social order in sociology, history and other social sciences, referring to the conduct of society
• Statutory instrument, which includes legislative orders
• World order (disambiguation), including the concept of a world government

Military

• Military order (disambiguation)
• Military order (instruction) (or "command," distinguish from "military command")
  • General order, a published directive from a commander
  • Standing order (disambiguation), a general order of indefinite duration, and similar ongoing rules in a parliament
• 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
• Ordered system, the universe or the cosmos, the antithetical concept of chaos

Religion

• Canonical order, or Canons Regular, a class of religious orders in the Catholic Church
• Ecclesiastical decoration, of a head of a denomination
• Holy orders, the rite or sacrament in which clergy are ordained
• Monastic order, established circa 300 AD
• Order of Mass, the set of texts of the Roman Catholic Church Latin Rite Mass that are generally invariable
• Religious order

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
  • Big O notation
• Z-order, which graphics cover up others on computer screens

Mathematics

• Order (mathematics), several meanings
• 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, 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 as defined by David Bohm
• 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 in signal processing
• 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
• 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
• Stream order, used to define river networks based on a hierarchy of tributaries

See also

• Chaos (disambiguation)
• Classification
• Coordination (disambiguation)
• Disorder (disambiguation)
• Ordinal (disambiguation)
• Organization (disambiguation)
• Structure (disambiguation)