The Oxford Thesaurus An A-Z Dictionary of Synonyms - systemn.

1) organized whole, organization, set, group, combination; structure, arrangement, pattern, set-up: Some believe that the universe is a vast ordered system, others that it is chaos in which only man sees order. It took years to establish the banking system in this country. 2) scheme, method, approach, modus operandi, way, procedure, methodology, technique, plan, process, practice, routine: There is a proper system for doing the job and you should keep to it.