System

n. combination of related things or parts that form a complex whole; body of an animal or human considered as a whole; set of principles or ideas; method, procedure; organization, orderliness

System (from Latin systēma, in turn from Greek  systēma) is a set of entities, real or abstract, where each entity interacts with, or is related to, at least one other entity. There are natural and man-made (designed) systems. Natural systems may not have an apparent objective. Man-made systems normally have purpose, objectives. They are “designed to work as a coherent entity”. Any object which is not part of that system is part of the system environment. Systems usually interact also with some objects in their environment, by means of some of their components.
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Noun
1. a group of independent but interrelated elements comprising a unified whole; "a vast system of production and distribution and consumption keep the country going"
(synonym) scheme
(hypernym) group, grouping
(hyponym) language system
(part-meronym) hierarchy
2. instrumentality that combines interrelated interacting artifacts designed to work as a coherent entity; "he bought a new stereo system"; "the system consists of a motor and a small computer"
(hypernym) instrumentality, instrumentation
(hyponym) audio system, sound system
(part-meronym) infrastructure, substructure
3. a complex of methods or rules governing behavior; "they have to operate under a system they oppose"; "that language has a complex system for indicating gender"
(synonym) system of rules
(hypernym) method
(hyponym) accounting
4. a procedure or process for obtaining an objective; "they had to devise a system that did not depend on cooperation"
(hypernym) plan of action
(hyponym) credit system
5. a group of physiologically or anatomically related organs or parts; "the body has a system of organs for digestion"
(hypernym) body part
(hyponym) articulatory system
6. an organized structure for arranging or classifying; "he changed the arrangement of the topics"; "the facts were familiar but it was in the organization of them that he was original"; "he tried to understand their system of classification"
(synonym) arrangement, organization, organisation
(hypernym) structure
(hyponym) classification system
(derivation) systematize, systematise, systemize, systemise
7. (physical chemistry) a sample of matter in which substances in different phases are in equilibrium; "in a static system oil cannot be replaced by water on a surface"; "a system generating hydrogen peroxide"
(hypernym) substance, matter
(classification) physical chemistry
8. the living body considered as made up of interdependent components forming a unified whole; "exercise helped him get the alcohol out of his system"
(hypernym) live body
9. an ordered manner; orderliness by virtue of being methodical and well organized; "his compulsive organization was not an endearing quality"; "we can't do it unless we establish some system around here"
(synonym) organization, organisation
(hypernym) orderliness, methodicalness
(derivation) systematize, systematise, systemize, systemise

n. system, method, procedure, structure

(n.)
The collection of staves which form a full score. See Score, n.
  

(n.)
Regular method or order; formal arrangement; plan; as, to have a system in one's business.
  

(n.)
One of the stellate or irregular clusters of intimately united zooids which are imbedded in, or scattered over, the surface of the common tissue of many compound ascidians.
  

(n.)
Hence, the whole scheme of created things regarded as forming one complete plan of whole; the universe.
  

(n.)
An assemblage of parts or organs, either in animal or plant, essential to the performance of some particular function or functions which as a rule are of greater complexity than those manifested by a single organ; as, the capillary system, the muscular system, the digestive system, etc.; hence, the whole body as a functional unity.
  

(n.)
An assemblage of objects arranged in regular subordination, or after some distinct method, usually logical or scientific; a complete whole of objects related by some common law, principle, or end; a complete exhibition of essential principles or facts, arranged in a rational dependence or connection; a regular union of principles or parts forming one entire thing; as, a system of philosophy; a system of government; a system of divinity; a system of botany or chemistry; a military system; the solar system.