(uncountable) Arrangement, disposition, sequence.
(uncountable) The state of being well arranged.
(countable) A command.
(countable) A request for some product or service.
(countable) A group of religious adherents, especially monks or nuns, set apart within their religion by adherence to a particular rule or set of principles; as, the Jesuit Order.
(countable) A society of knights; as, the Order of the Garter, the Order of the Bath.
(countable) A decoration, awarded by a government, a dynastic house, or a religious body to an individual, usually for distinguished service to a nation or to humanity.
(countable, biology, taxonomy) A rank in the classification of organisms, below class and above family; a taxon at that rank
Magnolias belong to the Order Magnoliales.
(cricket) The sequence in which a side’s batsmen bat; the batting order.
(electronics) a power of polynomial function in an electronic circuit’s block, such as a filter, an amplifier,
(chemistry) The overall power of the rate law of a chemical reaction, expressed as a polynomial function of concentrations of reactants and products.
(mathematics) The cardinality, or number of elements in a set or related structure.
(graph theory) The number of vertices in a graph
(order theory) A partially ordered set.
(order theory) The relation on a partially ordered set that determines that it in fact a partically ordered set.
(mathematics) The highest exponent appearing in a polynomial.