Order
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Order (from Latin ordo "row, rank, series, arrangement", Old French ordre from the Latin accusative, ordinem, attested in English from the 1220s). The word conveys a notion of "a system of parts subject to certain uniform, established ranks or proportions", an idea very central to scholastic thought, and it was used in a wide range of contexts, from architecture to angels.
- The monastic orders, originating with Anthony the Great and Benedict of Nursia from ca. 300 (see also Holy Orders)
- based on these, the military orders of the crusades
- based on these in turn, the various chivalric orders established since the 14th century.
- from these, the purely honorary decorative orders
- In the sense of command, in legal and military contexts:
- in the sense of "sequence, hierarchy" in scientific classification
- Order (biology)
- social order
- Order of reaction
- In mathematics:
- 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
- Order of a root of a polynomial
- Big O notation (mathematical), aka the order of an algorithm
- Orders of magnitude are factors of ten
- in computer science:
- canonical order
- Order (schema) The number of defining symbols in a schema.
- Miscellaneous meanings
- In information processing, order is a measure of the number of objects or sub-systems in a system as seen by an observer.
- Collating order
- Order (philosophy)
- Order (business)
- Architectonic orders: see classical order
- Ordered sets of pitches or pitch classes such as a tone row, see the mathematical meaning above.
- "The Order"
- The Order (AKA Bruders Schweigen or Silent Brotherhood) was an American revolutionary National Socialist group.
- The Order is the title of a 2001 and a 2003 film.
