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Order has many meanings (like a dictionary):

Religious[change | change source]

Honors[change | change source]

Legal and military[change | change source]

  • Court order, made by a judge
  • Executive order, issued by the executive branch of government
  • General order, a published directive from a commander
  • Standing order, a general order of unset duration, and similar ongoing rules in a parliament
  • Direct order

In scientific classification[change | change source]

  • Order (biology), a rank between class and family, or a taxon at that rank
  • Social order, a concept used in sociology, history and other social sciences
  • Order (chemistry), a concept of chemical kinetics

In mathematics[change | change source]

In computer science[change | change source]

  • Canonical order, the order of elements that follows a certain rules or specifications

In telecommunications[change | change source]

  • Modulation order, the number of different symbols that can be sent using a given modulation

Other uses[change | change source]

  • The opposite of chaos, disorder (in the sense of randomness), or entropy
  • Collating order, sequence for text, such as alphabetical
  • Order (business), an instruction from a customer to buy
  • Order (exchange), customer's instruction to a stock broker
  • Order (information processing), a measure of the number of objects or sub-systems in a system
  • Order (organization), an organization of people united by a common fraternal bond or social aim.
  • Architectonic orders
  • Way of categorizing Electronic filters by steepness
  • Way of categorizing the size of lighthouse Fresnel lenses
  • "The Order"
  • Order (food), a customer's choice of food at a restaurant or for delivery