What does logic mean?

Definitions for logic
ˈlɒdʒ ɪklog·ic

This dictionary definitions page includes all the possible meanings, example usage and translations of the word logic.

Princeton's WordNet

  1. logicnoun

    the branch of philosophy that analyzes inference

  2. logicnoun

    reasoned and reasonable judgment

    "it made a certain kind of logic"

  3. logicnoun

    the principles that guide reasoning within a given field or situation

    "economic logic requires it"; "by the logic of war"

  4. logicnoun

    the system of operations performed by a computer that underlies the machine's representation of logical operations

  5. logic, logical system, system of logicnoun

    a system of reasoning


  1. Logicnoun

    correct reasoning; as, I can't see any logic in his argument; also, sound judgment; as, the logic of surrender was uncontestable.

  2. Logicnoun

    The path of reasoning used in any specific argument; as, his logic was irrefutable.

  3. Logicnoun

    (Electronics, Computers) A function of an electrical circuit (called a gate) that mimics certain elementary binary logical operations on electrical signals, such as AND, OR, or NOT; as, a logic circuit; the arithmetic and logic unit.


  1. logicnoun

    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.

  2. logicnoun

    The study of the principles and criteria of valid inference and demonstration.

  3. logicnoun

    The mathematical study of relationships between rigorously defined concepts and of proof of statements.

  4. logicnoun

    A formal or informal language together with a deductive system or a model-theoretic semantics.

  5. logicnoun

    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.

  6. logicnoun

    The part of an electronic system that performs the boolean logic operations, short for logic gates or logic circuit.

    Fred is designing the logic for the new controller.

  7. logicverb

    To engage in excessive or inappropriate application of logic.

  8. logicverb

    To apply logical reasoning to.

  9. logicverb

    To overcome by logical argument.

  10. logicadjective


  11. Etymology: From logike, from logica, from λογική, from properly feminine of λογικός, from λόγος.


  1. logic

    Logic is the systematic and coherent study of reasoning, inference, and valid argumentation. It involves the examination of principles and structures of reasoning to determine their soundness and validity. Logic establishes rules and methods for distinguishing between correct and incorrect reasoning and seeks to understand, analyze, and evaluate the relationships between statements and propositions. It enables individuals to make accurate deductions, identify fallacies, and assess the truth or falsehood of a given argument.

Webster Dictionary

  1. Logicnoun

    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

  2. Logicnoun

    a treatise on logic; as, Mill's Logic

  3. Etymology: [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. Logic

    Logic has two meanings: first, it describes the use of valid reasoning where it is used in most intellectual activities, including philosophy and science, or, second, it describes the study of modes of reasoning. It is primarily studied in the disciplines of philosophy, mathematics, semantics, and computer science. It examines general forms that arguments may take. In mathematics, it is the study of valid inferences within some formal language. Logic is also studied in argumentation theory. Logic was studied in several ancient civilizations, including India, China, Persia and Greece. In the West, logic was established as a formal discipline by Aristotle, who gave it a fundamental place in philosophy. The study of logic was part of the classical trivium, which also included grammar and rhetoric. In the East, logic was developed by Buddhists and Jainists. Logic is often divided into three parts, inductive reasoning, abductive reasoning, and deductive reasoning.

Chambers 20th Century Dictionary

  1. Logic

    loj′ik, n. the science and art of reasoning correctly: the science of the necessary laws of thought.—adj. Log′ical, according to the rules of logic: skilled in logic: discriminating.—ns. Logical′ity, Log′icalness.—adv. Log′ically.—n. Logic′ian, one skilled in logic.—v.i. Log′icise, to argue.—Chop logic (see Chop); Deductive logic, logic independent of probability or quantitative considerations; Formal logic, logic regarded as a distinct science, independent of matters of fact; Inductive logic, the logic of scientific reasoning; Material logic, logic which takes into account natural fact or phenomena, as distinct from formal logic; Natural logic, the natural faculty of distinguishing the true from the false: the logical doctrine applicable to natural things as opposed to the logic of faith; Pure logic, the general laws of thought. [Gr. logikē, from logos, speech.]

The Nuttall Encyclopedia

  1. Logic

    the science of correct thinking or of the laws which regulate thought, called also dialectics; or in the Hegelian system "the scientific exposition and development of those notions or categories which underlie all things and all being."

The Roycroft Dictionary

  1. logic

    An instrument used for bolstering a prejudice.

U.S. National Library of Medicine

  1. Logic

    The science that investigates the principles governing correct or reliable inference and deals with the canons and criteria of validity in thought and demonstration. This system of reasoning is applicable to any branch of knowledge or study. (Random House Unabridged Dictionary, 2d ed & Sippl, Computer Dictionary, 4th ed)

Editors Contribution

  1. logic

    The ability, act and process of to think, feel, know and understand in a step-by-step way.

    Logic is at the heart of human life and computer processing.

    Submitted by MaryC on February 11, 2020  

  2. logic

    The ability, act and process to think, see, feel, know and understand the effect of a proposed or perceived action, solution or choice.

    Logic is so important within life for us all.

    Submitted by MaryC on October 22, 2020  

Suggested Resources

  1. logic

    Song lyrics by logic -- Explore a large variety of song lyrics performed by logic on the Lyrics.com website.

British National Corpus

  1. Spoken Corpus Frequency

    Rank popularity for the word 'logic' in Spoken Corpus Frequency: #4046

  2. Nouns Frequency

    Rank popularity for the word 'logic' in Nouns Frequency: #1654

How to pronounce logic?

How to say logic in sign language?


  1. Chaldean Numerology

    The numerical value of logic in Chaldean Numerology is: 8

  2. Pythagorean Numerology

    The numerical value of logic in Pythagorean Numerology is: 1

Examples of logic in a Sentence

  1. Steve Ross:

    We had the same thing happening in Germany in the 1920s with people being roughed up by the Brownshirts and they deserved it because they were Jews and Marxists and radicals and dissidents and gypsies — that was what Hitler was saying, i'm not saying Trump is Hitler, but the logic of condoning violence against those who oppose you -- you can imagine, a man who would condone it as a candidate -- what would he do as an official president?

  2. Don DeLillo:

    If we are on the outside, we assume a conspiracy is the perfect working of a scheme. Silent nameless men with unadorned hearts. A conspiracy is everything that ordinary life is not. It's the inside game, cold, sure, undistracted, forever closed off to us. We are the flawed ones, the innocents, trying to make some rough sense of the daily jostle. Conspirators have a logic and a daring beyond our reach. All conspiracies are the same taut story of men who find coherence in some criminal act.

  3. Nick Bubb:

    There is some logic (for Sainsbury's), at the right price.

  4. Victor Gobitz:

    Our logic is that there would be synergies, you create more value.

  5. Ray Moore:

    There is no such thing as same-sex marriage in the constitution. The words are not there, we've never had it in our history, five judges on the Supreme Court, or justices, have presumed to find a fundamental right which has no basis in the history or logic or tradition of our country.

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"logic." Definitions.net. STANDS4 LLC, 2024. Web. 5 Mar. 2024. <https://www.definitions.net/definition/logic>.

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