System Definition

Define what is System?

1. system (noun)

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.

instrumentation, instrumentality noun
an artifact (or system of artifacts) that is instrumental in accomplishing some end.


audio system, sound system noun
a system of electronic equipment for recording or reproducing sound.

communication system noun
a system for communicating.

ADP system, ADPS, automatic data processing system, computer system, computing system noun
a system of one or more computers and associated software with common storage.

containment noun
(physics) a system designed to prevent the accidental release of radioactive material from a reactor.

control system noun
a system for controlling the operation of another system.

data system, information system noun
system consisting of the network of all communication channels used within an organization.

drainage system noun
a system of watercourses or drains for carrying off excess water.

exhaust system, exhaust noun
system consisting of the parts of an engine through which burned gases or steam are discharged.

EDS, explosive detection system noun
a rapid automatic system to detect plastic explosives in passengers' luggage using X-ray technology and computers; designed for use in airports.

ETD, explosive trace detection noun
a system for screening luggage in airports; an agent passes a swab around or inside luggage and then runs the swab through a machine that can detect trace amounts of explosives.

guidance device, guidance system noun
a system of equipment for automatically guiding the path of a vehicle (especially a missile).

assemblage, hookup noun
a system of components assembled together for a particular purpose.

inertial guidance system, inertial navigation system noun
a system to control a plane or spacecraft; uses inertial forces.

lockage noun
a system of locks in a canal or waterway.

labyrinth, maze noun
complex system of paths or tunnels in which it is easy to get lost.

mechanical system noun
a system of elements that interact on mechanical principles.

navigational system noun
a system that provides information useful in determining the position and course of a ship or aircraft.

electronic network, network noun
(electronics) a system of interconnected electronic components or circuits.

network noun
a system of intersecting lines or channels.

propulsion system noun
a system that provides a propelling or driving force.

resonator noun
any system that resonates.

scaffolding, staging noun
a system of scaffolds.

security system noun
(computing) a system that enforces boundaries between computer networks.

selsyn, synchro noun
a system consisting of a generator and a motor so connected that the motor will assume the same relative position as the generator; the generator and the motor are synchronized.

shipboard system noun
a system designed to work as a coherent entity on board a naval ship.

solar thermal system noun
a system that converts sunlight into heat.

sprinkler system noun
a system for extinguishing fires; water from a network of overhead pipes is released through nozzles that open automatically with the rise in temperature.

synchromesh noun
an automotive system for shifting gears in which the gears revolve at the same speed and so shift smoothly.

2. system, scheme (noun)

a group of independent but interrelated elements comprising a unified whole.

  • a vast system of production and distribution and consumption keep the country going.
Synonyms: scheme

group, grouping noun
any number of entities (members) considered as a unit.


language system noun
a system of linguistic units or elements used in a particular language.

judicatory, judicial system, judicature, judiciary noun
the system of law courts that administer justice and constitute the judicial branch of government.

economic system, economy noun
the system of production and distribution and consumption.

ecosystem noun
a system formed by the interaction of a community of organisms with their physical environment.

social organisation, social organization, social structure, social system, structure noun
the people in a society considered as a system organized by a characteristic pattern of relationships.

dragnet noun
a system of coordinated measures for apprehending (criminals or other individuals).

machinery noun
a system of means and activities whereby a social institution functions.

network, web noun
an interconnected system of things or people.

nonlinear system noun
a system whose performance cannot be described by equations of the first degree.

subsystem noun
a system that is part of some larger system.

organism noun
a system considered analogous in structure or function to a living body.

syntax noun
a systematic orderly arrangement.

body noun
a collection of particulars considered as a system.

shebang noun
an entire system; used in the phrase `the whole shebang'.

solar system noun
the sun with the celestial bodies that revolve around it in its gravitational field.

water system noun
a river and all of its tributaries.

root system, rootage noun
a developed system of roots.

3. system (noun)

(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.

matter noun
that which has mass and occupies space.

4. system of rules, system (noun)

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.
Synonyms: system of rules

method noun
a way of doing something, especially a systematic way; implies an orderly logical arrangement (usually in steps).


accounting noun
a system that provides quantitative information about finances.

discipline noun
a system of rules of conduct or method of practice.

frame of reference, frame noun
a system of assumptions and standards that sanction behavior and give it meaning.

gambling system noun
a system of rules for placing bets that is believed to lead to winning.

government noun
(government) the system or form by which a community or other political unit is governed.

honor system noun
a system of conduct in which participants are trusted not to take unfair advantage of others.

logical system, system of logic, logic noun
a system of reasoning.

merit system noun
the system of employing and promoting civil servants on the basis of ability.

point system noun
a system of evaluation based on awarding points according to rules.

spoils system noun
the system of employing and promoting civil servants who are friends and supporters of the group in power.

organon noun
a system of principles for philosophic or scientific investigations; an instrument for acquiring knowledge.

program, programme noun
a system of projects or services intended to meet a public need.

theosophy noun
a system of belief based on mystical insight into the nature of God and the soul.

anthroposophy noun
a system of beliefs and practices based on the philosophy of Rudolf Steiner; it claims to integrate the practical and psychological in child-centered education.

logic noun
the system of operations performed by a computer that underlies the machine's representation of logical operations.

theological system, theology noun
a particular system or school of religious beliefs and teachings.

ethical code, ethic noun
a system of principles governing morality and acceptable conduct.

5. organization, arrangement, organisation, system (noun)

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.

structure noun
the complex composition of knowledge as elements and their combinations.


classification system noun
a system for classifying things.

contrivance noun
an artificial or unnatural or obviously contrived arrangement of details or parts etc..

coordinate system, frame of reference, reference frame, reference system noun
a system that uses coordinates to establish position.

data structure noun
(computer science) the organization of data (and its storage allocations in a computer).

design, plan noun
an arrangement scheme.

distribution, statistical distribution noun
(statistics) an arrangement of values of a variable showing their observed or theoretical frequency of occurrence.

genetic map noun
graphical representation of the arrangement of genes on a chromosome.

kinship system noun
(anthropology) the system of social relationships that constitute kinship in a particular culture, including the terminology that is used and the reciprocal obligations that are entailed.

lattice noun
an arrangement of points or particles or objects in a regular periodic pattern in 2 or 3 dimensions.

living arrangement noun
an arrangement to allow people (or ideas) to coexist.

ontology noun
(computer science) a rigorous and exhaustive organization of some knowledge domain that is usually hierarchical and contains all the relevant entities and their relations.

calendar noun
a system of timekeeping that defines the beginning and length and divisions of the year.

6. system (noun)

a group of physiologically or anatomically related organs or parts.

  • the body has a system of organs for digestion.

body part noun
any part of an organism such as an organ or extremity.


articulatory system noun
the system of joints in the body.

digestive system, gastrointestinal system, systema alimentarium, systema digestorium noun
the system that makes food absorbable into the body.

endocrine system noun
the system of glands that produce endocrine secretions that help to control bodily metabolic activity.

venous blood system, venation noun
(zoology) the system of venous blood vessels in an animal.

immune system noun
a system (including the thymus and bone marrow and lymphoid tissues) that protects the body from foreign substances and pathogenic organisms by producing the immune response.

integumentary system noun
the skin and its appendages.

RES, reticuloendothelial system noun
a widely distributed system consisting of all the cells able to ingest bacteria or colloidal particles etc, except for certain white blood cells.

mononuclear phagocyte system, MPS, system of macrophages noun
a widely distributed system of free and fixed macrophages derived from bone marrow.

muscle system, muscular structure, musculature noun
the muscular system of an organism.

musculoskeletal system noun
the system of muscles and tendons and ligaments and bones and joints and associated tissues that move the body and maintain its form.

nervous system, systema nervosum noun
the sensory and control apparatus consisting of a network of nerve cells.

central nervous system, CNS, systema nervosum centrale noun
the portion of the vertebrate nervous system consisting of the brain and spinal cord.

peripheral nervous system, systema nervosum periphericum noun
the section of the nervous system lying outside the brain and spinal cord.

genital system, reproductive system noun
organs and tissues involved in the production and maturation of gametes and in their union and subsequent development as offspring.

apparatus urogenitalis, genitourinary apparatus, genitourinary system, systema urogenitale, urinary apparatus, urinary system, urogenital apparatus, urogenital system noun
the system that includes all organs involved in reproduction and in the formation and voidance of urine.

respiratory system, systema respiratorium noun
the system for taking in oxygen and giving off carbon dioxide; in terrestrial animals this is accomplished by breathing.

sensory system noun
the body's system of sense organs.

tract noun
a system of body parts that together serve some particular purpose.

vascular system noun
the vessels and tissue that carry or circulate fluids such as blood or lymph or sap through the body of an animal or plant.

skeletal system, systema skeletale, skeleton, frame noun
the hard structure (bones and cartilages) that provides a frame for the body of an animal.

7. system (noun)

a procedure or process for obtaining an objective.

  • they had to devise a system that did not depend on cooperation.

plan of action noun
a plan for actively doing something.


credit system noun
a system for allowing people to purchase things on credit.

legal system noun
a system for interpreting and enforcing the laws.

pricing system noun
a system for setting prices on goods or services.

promotion system noun
a system for advancing participants to higher-status positions.

8. system (noun)

the living body considered as made up of interdependent components forming a unified whole.

  • exercise helped him get the alcohol out of his system.

live body noun
the body of a living animal or person.

9. organisation, organization, system (noun)

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.

methodicalness, orderliness noun
the quality of appreciating method and system.

Nearby Terms

system administrator (noun)
a person in charge of managing and maintaining a computer system of telecommunication system (as for a business or institution)

system call (noun)
an instruction that interrupts the program being executed and passes control to the supervisor

system clock (noun)
a time-of-day clock in a computer system

system command (noun)
a computer user's instruction (not part of a program) that calls for action by the computer's executive program

system error (noun)
an instruction that is either not recognized by an operating system or is in violation of the procedural rules

system of logic (noun)
a system of reasoning

system of macrophages (noun)
a widely distributed system of free and fixed macrophages derived from bone marrow

system of measurement (noun)
a system of related measures that facilitates the quantification of some particular characteristic

system of numeration (noun)
any notation for the representation of numbers

system of rules (noun)
a complex of methods or rules governing behavior

system of weights (noun)
a system of units used to express the weight of something

system of weights and measures (noun)
system of measurement for length and weight and duration

system program (noun)
a program (as an operating system or compiler or utility program) that controls some aspect of the operation of a computer

systema alimentarium (noun)
the system that makes food absorbable into the body

systema digestorium (noun)
the system that makes food absorbable into the body