Definitions for: Logic


[n] reasoned and reasonable judgment; "it made a certain kind of logic"
[n] a system of reasoning
[n] the principles that guide reasoning within a given field or situation; "economic logic requires it"; "by the logic of war"
[n] the branch of philosophy that analyzes inference



Webster (1913) Definition: Log"ic, n. [OE. logike, F. logique, L. logica, logice,
Gr. logikh` (sc. te`chnh), fr. logiko`s belonging to speaking
or reason, fr. lo`gos speech, reason, le`gein to say, speak.
See Legend.]
1. The science or art of exact reasoning, or of pure and
formal thought, or of the laws according to which the
processes of pure thinking should be conducted; the
science of the formation and application of general
notions; the science of generalization, judgment,
classification, reasoning, and systematic arrangement;
correct reasoning.



Logic is science of the laws of thought, as that is, of
the necessary conditions to which thought, considered in
itself, is subject. --Sir W.
Hamilton.

Note: Logic is distinguished as pure and applied. ``Pure
logic is a science of the form, or of the formal laws,
of thinking, and not of the matter. Applied logic
teaches the application of the forms of thinking to
those objects about which men do think.'' --Abp.
Thomson.

2. A treatise on logic; as, Mill's Logic.

Synonyms: logical system, system of logic

See Also: Aristotlean logic, common sense, formal logic, good sense, gumption, horse sense, mathematical logic, modal logic, mother wit, philosophy, principle, sense, symbolic logic, system, system of rules

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