logic

noun

(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 mathematical proof of statements.

(countable, mathematics) A formal or informal language together with a deductive system or a model-theoretic semantics.

(countable) Any system of thought, whether rigorous and productive or not, especially one associated with a particular person.

(uncountable) The part of a system (usually electronic) that performs the boolean logic operations, short for logic gates or logic circuit.

(countable, sociology) A system of thought or collection of rhetoric, especially one associated with a social practice.

verb

(transitive) To apply logical reasoning to.

(transitive) To overcome by logical argument.

(intransitive, derogatory) To engage in excessive or inappropriate application of logic.

adjective

logical

Roots

logoslog- · Greek · word, reason

Synonyms for logic

logicalityn reasoningn logicalnessn ratiocinationn rationalityn philosophyn

Synonyms & related words for logic

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Words related to logic

Explore words related to logic — words associated with it, words that go with it, and its nearest matches in meaning. Related words include antilogism, nonlogical, logicize, choplogic, illogic, logical, logician, sorites. Click any word to make it the center of the map and keep exploring the web of connections.

Synonyms for logic

Common synonyms for logic include logicality, reasoning, logicalness, ratiocination, rationality, philosophy — words that share a close meaning. Hover or tap any word on the map for its definition and part of speech.

Where does logic come from?

The word logic breaks down into one root of Greek origin: the root log-, from Greek logos (“word, reason”). Explore each root to see other English words built from the same source.