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Merriam-Webster's Collegiate Dictionary log·ic ETYMOLOGY Middle English logik, from Anglo-French, from Latin logica, from Greek logikē, from feminine of logikos of reason, from logos reason — more at legend DATE 12th century 1. a. (1) a science that deals with the principles and criteria of validity of inference and demonstration : the science of the formal principles of reasoning (2) a branch or variety of logic modal logic Boolean logic (3) a branch of semiotic; especially : syntactics (4) the formal principles of a branch of knowledge b. (1) a particular mode of reasoning viewed as valid or faulty (2) relevance , propriety c. interrelation or sequence of facts or events when seen as inevitable or predictable d. the arrangement of circuit elements (as in a computer) needed for computation; also : the circuits themselves 2. something that forces a decision apart from or in opposition to reason the logic of war English Etymology logic mid-14c., "branch of philosophy that treats of forms of thinking," from O.Fr . logique, from L. (ars) logica, from Gk. logike (techne)"reasoning (art)," from fem. of logikos "pertaining to speaking or reasoning," from logos "reason, idea, word" (see logos). Meaning "logical argumentation" is from c.1600.http://O.Fr Oxford Advanced Learner's Dictionary-牛津双解-OALD7 ☞ logic logic / 5lCdVik; NAmE 5lB:dVik / noun1. [U] a way of thinking or explaining sth 思维方式；解释方法；逻辑: I fail to see the logic behind his argument. 我不明白支持他论据的是什么逻辑。 The two parts of the plan were governed by the same logic. 计划的两个部份均受到了同一思维方式的制约。 2. [U, sing.] sensible reasons for doing sth (做某事的)道理,合乎情理的原因: Linking the proposals in a single package did have a certain logic. 把这些提议联系起来成为一揽子提议确有一定的道理。 a strategy based on sound commercial logic 基于合理商业考虑的策略 There is no logic to / in any of their claims. 他们的任何索赔都不具正当的理由。 3. [U] (philosophy 哲) the science of thinking about or explaining the reason for sth using formal methods 逻辑学: the rules of logic 逻辑学规则 4. [U] (computing 计) a system or set of principles used in preparing a computer to perform a particular task 逻辑系统；操作规则 Oxford Collocations Dictionary for Students of English logic noun 1 system of reasoning ADJ. formal | deductive, inductive VERB + LOGIC apply, use Philosophers use logic to prove their arguments. 2 use of reason ADJ. compelling, exquisite, impeccable, inexorable There is a compelling logic to his main theory. | strict | internal, underlying | commercial, economic, political, scientific There is sound commercial logic in never giving credit to retailers. VERB + LOGIC accept, follow, understand I can't follow the logic of what you are saying. | defy It's a stupid decision that completely defies logic. | apply, use You can't use the same logic in dealing with children. PREP. ~ behind What's the logic behind this decision? | ~ in There doesn't seem to be any logic in the move. Webster's Third New International Dictionary, Unabridged Search result show the entry is found in: aristotelian logic , or material logic , or mathematical logic , or symbolic logic , or traditional logic , or logic bomb , or chop logic , or combinatory logic , or algebraic logic , or formal logic , or inductive logic log·ic I. \ˈläjik, -jēk\ noun (-s) Etymology: Middle English logik, from Middle French logique, from Latin logica, from Greek logikē, from feminine of logikos of speech, argumentative, logical, from logos word, reason, speech, account + -ikos -ic — more at legend 1. a. (1) : a science that deals with the canons and criteria of validity in thought and demonstration and that traditionally comprises the principles of definition and classification and correct use of terms and the principles of correct predication and the principles of reasoning and demonstration : the science of the normative formal principles of reasoning : the science of correct reasoning — see formal logic, material logic (2) : a system of formal principles of deduction or inference (3) : semiotic or a branch of semiotic; especially : syntactics (4) : the formal principles of a branch of knowledge < the logic of art > b. (1) : a particular mode of argumentation or reasoning viewed as valid or faulty according to its apparent agreement with or departure from accepted principles of logic < she spent quite a long time explaining the situation, but he failed to see her logic > (2) : relevance or propriety (as of a quality, a procedure) judged as present or absent according to apparent conformity or lack of conformity with the dictates of logic < could not understand the logic of such a deed > c. : interrelation or connection or sequence (as of facts or events) especially when seen by rational analysis as inevitable, necessary, or predictable < by the logic of events, anarchy leads to dictatorship > 2. : something that convinces or proves or that obviates argument or makes argument useless and that is by its nature quite apart from or beyond or opposed to the use of reason as a means of arriving at decisions or settling disputes or attaining truth 3. : an exposition of or treatise on logic II. noun : the fundamental principles and applications of truth tables and of the interconnection of circuit elements and gating necessary for computation in a computer ; also : the circuits themselves |
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