logic

log·ic

noun \ˈlä-jik\

Definition of LOGIC

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 semiotics; 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>

— lo·gi·cian \lō-ˈji-shən\ noun

Examples of LOGIC

1. If you just use a little logic, you'll see I'm right.
2. There's no logic in your reasoning.
3. There's some logic to what he says.
4. There's a certain logic in what he says.
5. The revolution proceeded according to its own logic.
6. the logic of the situation

Origin of LOGIC

Middle English logik, from Anglo-French, from Latin logica, from Greek logikē, from feminine of logikos of reason, from logos reason — more at legend

First Known Use: 12th century

Related to LOGIC

Synonyms: intellection, ratiocination, reason, reasoning, sense

Related Words: cogency, coherence, logicality, logicalness, rationality, rationalness; convincingness, persuasiveness; syllogism, synthesis; analysis, dissection; deduction, induction; argumentation, disputation

Near Antonyms: illogic, incoherence; absurdity, brainlessness, insanity, irrationality, nonsensicalness, preposterousness, senselessness

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Other Logic Terms

a posteriori, connotation, corollary, inference, mutually exclusive, paradox, postulate, syllogism