Order

Order frequently refers to orderliness, a desire for organization.

Order may also refer to:

Sequences

• An arrangement of items in sequence
• The result of enumeration of a set of items
• Collation, the sequencing and ordering of text
  • Alphabetical order
• Order of precedence, a sequential hierarchy of the nominal importance of items, often people

Philosophy

• 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

Economics and commerce

• Order (business), an instruction from a customer to buy
  • Work order, an order received by an organization from a customer or client
• Order (exchange), customer's instruction to a stock broker
• Money order, a payment order for a pre-specified amount of money

Honours and fraternal organisations

• Order (honour)
  • Chivalric order, established since the middle ages
    • Military order, established in the era of the crusades
    • Dynastic order of knighthood, conferred by a head of a presently or formerly sovereign royal house
  • Order of merit of a state or other entity
  • Ecclesiastical decoration, order or decoration conferred by a head of a denomination
• Fraternal order

Legal, political, and military

Civil government

• 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
• Statutory instrument, which includes legislative orders
• World order (disambiguation), including the concept of a world government

Military

• Military order (instruction)
  • 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

Mathematics, science, and technology

Mathematics

• Order (mathematics), with various meanings
• Ranking
• Order of computation, the computational complexity of an algorithm
• Canonical order (disambiguation), the order of elements that obeys a certain set of rules or specifications
• Stochastic ordering of random variables or probability distributions
• Order of hierarchical complexity, quantified by the Model of Hierarchical Complexity, the ordinal complexity of tasks that are addressed
• Order, a mathematical structure modeling sequenced items, dealt with in order theory
• Partially ordered set
  • Complete partial order

Physics

• 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
• Implicate and explicate order according to David Bohm
• 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
• The polynomial order of a Filter (signal processing) transfer function

Other uses in science and technology

• ORDER (spacecraft), a space debris removal transport satellite
• Order (biology), a rank between class and family, or a taxon at that rank
• Order of reaction, a concept of chemical kinetics
• Social order in sociology, history and other social sciences, referring to the conduct of society
• Stream order, used to define river networks based on a hierarchy of tributaries
• Z-order, which graphics cover up others on computer screens

Media and entertainment

• Order (album), 2009 album by German band Maroon
• Orders (film), a 1974 film by Canadian filmmaker, Michel Brault
• The Order of Odd-Fish, a 2008 children's novel by James Kennedy

Religion

• Religious order
• Monastic order, established circa 300 AD
• Holy Orders, the rite or sacrament in which clergy are ordained
• Order of Mass, the set of texts of the Roman Catholic Church Latin Rite Mass that are generally invariable

Other uses

• The Order (group), an underground American neo-Nazi organization active in 1983 and 1984
• Architectonic orders, in architecture

See also

• Collation (disambiguation)
• Coordination (disambiguation)
• Ordinal (disambiguation)
• Ordinate in mathematics, the y element of an ordered pair (x, y)
• Ordination, process by which individuals are consecrated
• Subordinate