Source : Webster's Revised Unabridged Dictionary (1913)

System \Sys"tem\, n. [L. systema, Gr. ?, fr. ? to place
   together; sy`n with + ? to place: cf. F. syst[`e]me. See
   {Stand}.]
   1. 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.

Source : WordNet®

system
     n 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"
          [syn: {scheme}]
     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"
     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" [syn: {system of
        rules}]
     4: a procedure or process for obtaining an objective; "they had
        to devise a system that did not depend on cooperation"
     5: a group of physiologically or anatomically related organs or
        parts; "the body has a system of organs for digestion"
     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" [syn: {arrangement}, {organization}, {organisation}]
     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"
     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"
     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" [syn: {organization}, {organisation}]

Source : Free On-Line Dictionary of Computing

system
     
        1. The {supervisor} program or {operating system} on a
        computer.
     
        2. The entire computer system, including input/output devices,
        the {supervisor} program or {operating system} and possibly
        other {software}.
     
        3. Any large program.
     
        4. Any method or {algorithm}.
     
        [{Jargon File}]