an assemblage or combination of things or parts forming a complex or unitary whole: a mountain system; a railroad system.
any assemblage or set of correlated members: a system of currency; a system of shorthand characters.
an ordered and comprehensive assemblage of facts, principles, doctrines, or the like in a particular field of knowledge or thought: a system of philosophy.
a coordinated body of methods or a scheme or plan of procedure; organizational scheme: a system of government.
any formulated, regular, or special method or plan of procedure: a system of marking, numbering, or measuring; a winning system at bridge.
due method or orderly manner of arrangement or procedure: There is no system in his work.
the world or universe.
a number of heavenly bodies associated and acting together according to certain natural laws: the solar system.
a hypothesis or theory of the disposition and arrangements of the heavenly bodies by which their phenomena, motions, changes, etc., are explained: the Ptolemaic system; the Copernican system.
an assemblage of organs or related tissues concerned with the same function: the nervous system; the digestive system.
the entire human or animal body considered as a functioning unit: an ingredient toxic to the system.
one's psychological makeup, especially with reference to desires or preoccupations: to get something out of one's system.
a method or scheme of classification: the Linnean system of plants.
(sometimes initial capital letter) the prevailing structure or organization of society, business, or politics or of society in general; establishment (usually preceded by the ): to work within the system instead of trying to change it.
Geology. a major division of rocks comprising sedimentary deposits and igneous masses formed during a single geologic period.
Physical Chemistry. a combination of two or more phases, as a binary system, each of which consists of one or more substances, that is attaining or is in equilibrium.
Computers. a working combination of hardware, software, and data communications devices.
Checkers. either of the two groups of 16 playing squares on four alternate columns.

1610–20; < Late Latin systēma < Greek sýstēma whole compounded of several parts, equivalent to sy- sy- + stē- (variant stem of histánai to cause to stand; akin to Latin stāre to stand) + -ma noun suffix denoting result of action

systemless, adjective
intersystem, adjective
supersystem, noun

1. organization. 7. cosmos. 9b. organism. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
system (ˈsɪstəm)
1.  a group or combination of interrelated, interdependent, or interacting elements forming a collective entity; a methodical or coordinated assemblage of parts, facts, concepts, etc: a system of currency; the Copernican system
2.  any scheme of classification or arrangement: a chronological system
3.  a network of communications, transportation, or distribution
4.  a method or complex of methods: he has a perfect system at roulette
5.  orderliness; an ordered manner
6.  (often capital) the system society seen as an environment exploiting, restricting, and repressing individuals
7.  an organism considered as a functioning entity
8.  any of various bodily parts or structures that are anatomically or physiologically related: the digestive system
9.  one's physiological or psychological constitution: get it out of your system
10.  any assembly of electronic, electrical, or mechanical components with interdependent functions, usually forming a self-contained unit: a brake system
11.  a group of celestial bodies that are associated as a result of natural laws, esp gravitational attraction: the solar system
12.  chem See also phase rule a sample of matter in which there are one or more substances in one or more phases
13.  a point of view or doctrine used to interpret a branch of knowledge
14.  mineralogy Also called crystal system one of a group of divisions into which crystals may be placed on the basis of the lengths and inclinations of their axes
15.  geology a stratigraphical unit for the rock strata formed during a period of geological time. It can be subdivided into series
[C17: from French système, from Late Latin systēma, from Greek sustēma, from syn- + histanai to cause to stand]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

1610s, "the whole creation, the universe," from L.L. systema "an arrangement, system," from Gk. systema "organized whole, body," from syn- "together" + root of histanai "cause to stand" from PIE base *sta- "to stand" (see stet). Meaning "set of correlated principles, facts,
ideas, etc." first recorded 1630s. Meaning "animal body as an organized whole, sum of the vital processes in an organism" is recorded from 1680s; hence figurative phrase to get (something) out of one's system (1900). Computer sense of "group of related programs" is recorded from 1963. All systems go (1962) is from U.S. space program.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

system sys·tem (sĭs'təm)

  1. A group of interacting, interrelated, or interdependent elements forming a complex whole.

  2. An organism or body considered as a whole, especially with regard to its vital processes or functions.

  3. A group of physiologically or anatomically complementary organs or parts.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Cultural Dictionary

system definition

A group of bodily organs that have similar structures or work together to perform some function, such as the digestive system, nervous system, and respiratory system.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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