Security Definition–noun | 1. | freedom from danger, risk, etc.; safety. | | 2. | freedom from care, anxiety, or doubt; well-founded confidence. | | 3. | something that secures or makes safe; protection; defense. | | 4. | freedom from financial cares or from want: The insurance policy gave the family security. | | 5. | precautions taken to guard against crime, attack, sabotage, espionage, etc.: The senator claimed security was lax and potential enemies know our plans. | | 6. | a department or organization responsible for protection or safety: He called security when he spotted the intruder. | | 7. | protection or precautions taken against escape; custody: The dangerous criminal was placed under maximum security. | | 8. | an assurance; guarantee. | | 9. | Law. | a. | something given or deposited as surety for the fulfillment of a promise or an obligation, the payment of a debt, etc. | | b. | one who becomes surety for another. | | | 10. | an evidence of debt or of property, as a bond or a certificate of stock. | | 11. | Usually, securities. stocks and bonds. | | 12. | Archaic. overconfidence; cockiness. | –adjective | 13. | of, pertaining to, or serving as security: The company has instituted stricter security measures. | |
From Dictionary
System Definition–noun | 1. | an assemblage or combination of things or parts forming a complex or unitary whole: a mountain system; a railroad system. | | 2. | any assemblage or set of correlated members: a system of currency; a system of shorthand characters. | | 3. | an ordered and comprehensive assemblage of facts, principles, doctrines, or the like in a particular field of knowledge or thought: a system of philosophy. | | 4. | a coordinated body of methods or a scheme or plan of procedure; organizational scheme: a system of government. | | 5. | any formulated, regular, or special method or plan of procedure: a system of marking, numbering, or measuring; a winning system at bridge. | | 6. | due method or orderly manner of arrangement or procedure: There is no system in his work. | | 7. | the world or universe. | | 8. | Astronomy. | a. | a number of heavenly bodies associated and acting together according to certain natural laws: the solar system. | | b. | 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. | | | 9. | Biology. | a. | an assemblage of organs or related tissues concerned with the same function: the nervous system; the digestive system. | | b. | the entire human or animal body considered as a functioning unit: an ingredient toxic to the system. | | | 10. | one's psychological makeup, esp. with reference to desires or preoccupations: to get something out of one's system. | | 11. | a method or scheme of classification: the Linnean system of plants. | | 12. | (sometimes initial capital letter ) the prevailing structure or organization of society, business, or politics or of society in general; establishment (usually prec. by the): to work within the system instead of trying to change it. | | 13. | Geology. a major division of rocks comprising sedimentary deposits and igneous masses formed during a single geologic period. | | 14. | 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. | | 15. | Computers. a working combination of hardware, software, and data communications devices. | | 16. | Checkers. either of the two groups of 16 playing squares on four alternate columns. | |
From Dictionary
Related topics from Britannicasecurity and protection system
any of various means or devices designed to guard persons and property against a broad range of hazards, including crime, fire, accidents, espionage, sabotage, subversion, and attack.social security
any of the measures established by legislation to maintain individual or family income or to provide income when some or all sources of income are disrupted or terminated or when exceptionally heavy ...
collective security
system by which states have attempted to prevent or stop wars. Under a collective security arrangement, an aggressor against any one state is considered an aggressor against all other states, which ...
computer security
the protection of computer systems and information from harm, theft, and unauthorized use. Computer hardware is typically protected by the same means used to protect other valuable or sensitive ...
Social Security Act
(Aug. 14, 1935), original U.S. legislation establishing a permanent national old-age pension system through employer and employee contributions; the system was later extended to include dependents, ...
postal system
the institution-almost invariably under the control of a government or quasi-government agency-that makes it possible for any person to send a letter, packet, or parcel to any addressee, in the same ...
microelectromechanical system
mechanical parts and electronic circuits combined to form miniature devices, typically on a semiconductor chip, with dimensions from tens of micrometres to a few hundred micrometres (millionths of a ...
jajmani system
reciprocal social and economic arrangements between families of different castes within a village community in India, by which one family exclusively performs certain services for the other, such as ...
Security vs. Civil Liberties
Technology was at the forefront of international efforts to fight terrorism and bolster security in 2002 in the wake of the terrorist attacks in the U.S. on Sept. 11, 2001. The rush to deploy new ...
strategic weapons system
any weapons system designed to strike an enemy at the source of his military, economic, or political power. In practice, this means destroying a nation's cities, factories, military bases, ...
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