- An example of logic is deducing that two truths imply a third truth.
- An example of logic is the process of coming to the conclusion of who stole a cookie based on who was in the room at the time.
- the branch of philosophy dealing with correct reasoning, describing relationships among propositions in terms of implication, contradiction, contrariety, conversion, etc.
- a particular system of such relationships: Aristotelian logic
- correct reasoning; valid induction or deduction: the lack of logic in his scheme
- way of reasoning, whether correct or incorrect: to use faulty logic
- the system of principles underlying any art or science
- necessary connection or outcome, as through the working of cause and effect: the logic of events
- the systematized interconnection of switching functions, circuits, or devices, as in electronic computers
Origin of logicMiddle English logike ; from Old French logique ; from Classical Latin logica ; from Classical Greek logik? (techn?), logical (art) ; from logikos, of speaking or reasoning ; from logos, a word, reckoning, thought ; from legein, to speak, choose, read ; from Indo-European base an unverified form le?-, to gather from source Classical Latin legere, to collect, Old English læce, leech
- The study of the principles of reasoning, especially of the structure of propositions as distinguished from their content and of method and validity in deductive reasoning.
- a. A system of reasoning: Aristotle's logic.b. A mode of reasoning: By that logic, we should sell the company tomorrow.c. The formal, guiding principles of a discipline, school, or science.
- Valid reasoning: Your paper lacks the logic to prove your thesis.
- The relationship between elements and between an element and the whole in a set of objects, individuals, principles, or events: There's a certain logic to the motion of rush-hour traffic.
- Computers a. The nonarithmetic operations performed by a computer, such as sorting, comparing, and matching, that involve yes-no decisions.b. Computer circuitry.c. Graphic representation of computer circuitry.
Origin of logicMiddle English, from Old French logique, from Latin logica, from Greek logik&emacron; (tekhn&emacron;), (art) of reasoning, logic, feminine of logikos, of reasoning, from logos, reason; see leg- in Indo-European roots.
(countable and uncountable, plural logics)
- (uncountable) A method of human thought that involves thinking in a linear, step-by-step manner about how a problem can be solved. Logic is the basis of many principles including the scientific method.
- (philosophy, logic) The study of the principles and criteria of valid inference and demonstration.
- (uncountable, mathematics) The mathematical study of relationships between rigorously defined concepts and of proof of statements.
- (countable, mathematics) A formal or informal language together with a deductive system or a model-theoretic semantics.
- (uncountable) Any system of thought, whether rigorous and productive or not, especially one associated with a particular person.
- It's hard to work out his system of logic.
- (uncountable) The part of a system (usually electronic) that performs the boolean logic operations, short for logic gates or logic circuit.
- Fred is designing the logic for the new controller.
(third-person singular simple present logics, present participle logicking, simple past and past participle logicked)
- (intransitive, pejorative) To engage in excessive or inappropriate application of logic.
- To apply logical reasoning to.
- To overcome by logical argument.
From Old French logike, from Latin logica, from Ancient Greek Î»Î¿Î³Î¹ÎºÎ® (logike, “logic"), from properly feminine of Î»Î¿Î³Î¹ÎºÏŒÏ‚ (logikÃ³s, “of or pertaining to speech or reason or reasoning, rational, reasonable"), from Î»ÏŒÎ³Î¿Ï‚ (logos, “speech, reason").
logic - Computer Definition
The sequence of operations performed by hardware or software. It is the computer's "intelligence." Hardware logic is contained in the electronic circuits and follows the rules of Boolean logic. Software logic (program logic) is contained in the placement of instructions written by the programmer. Software logic is called "business logic" when it refers to the transactions of the business rather than underlying infrastructure such as the operating system, database management system (DBMS) or network. Logic Is Not Logical The term "logic" is not the same as "logical." Logic refers to algorithms and operational sequences; whereas, "logical" refers to a higher-level view of hardware, software or data that is not tied to physical structures (see logical vs. physical). See also logical expression.