Order

Order is the opposite of anarchy and chaos. It is often used in the phrase law and order.
Legal and military meanings
Scientific meanings
- Order (biology)
- Order of reaction
- In computing, canonical order
- In information processing, order is a measure of the number of objects or sub-systems in a system as seen by an observer.
Mathematical meanings
In a sequence, one item comes first, another second, another third, etc.; these ordinal numbers specify the order in which the items appear. Hence the next meaning of this word:
- Order of an ordered set; see also order theory, total order, total preorder and partial order
- Order of a group or its elements. See order (group theory).
  - Order of an element in some modulus, see multiplicative order
- Order of a differential equation
- Big O notation (mathematical), aka the order of an algorithm
- Orders of magnitude are factors of ten
Computer science meanings
- Order (schema) The number of defining symbols in a schema.
Miscellaneous meanings
- Order (philosophy)
- Order (business)
- Order (religious)
- Holy Orders
- Order (military)
- Architectonic orders: see classical order
- Ordered sets of pitches or pitch classes such as a tone row, see the mathematical meaning above.
- Order (decoration)
"The Order"
- The Order (AKA Bruders Schweigen or Silent Brotherhood) was an American revolutionary National Socialist group.
- The Order is a 2003 film.