logic

noun
log·​ic | \ ˈlä-jik How to pronounce logic (audio) \

Definition of logic

1a(1) : a science that deals with the principles and criteria of validity of inference and demonstration : the science of the formal principles of reasoning a professor of logic
(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 the logic of grammar
b(1) : a particular mode of reasoning viewed as valid or faulty She spent a long time explaining the situation, but he failed to see her logic.
(2) : relevance, propriety could not understand the logic of such an action
c : interrelation or sequence of facts or events when seen as inevitable or predictable By the logic of events, anarchy leads to dictatorship.
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

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Other Words from logic

logician \ lō-​ˈji-​shən How to pronounce logic (audio) \ noun

How are logistics and logic related?

Logistics follows the same pattern of other plural nouns—such as ballistics, linguistics, statistics, or physics—that represent fields of study and take either a singular or plural verb.

Logic, used strictly in the singular, is a science that deals with the formal principles of reason. If a visitor walks in the house with wet hair, it is logical for one to assume that it is raining outside. Logistics, which involves such concerns as the delivery of personnel or supplies in an efficient manner, can often employ logic, such as by reasoning out the path least likely to interrupt the flow of a delivery:

As with many other areas of the economy, the digital revolution is having a profound effect on delivery logistics. The combination of mobile computing, analytics, and cloud services, all of which are fueled by the Internet of Things (IoT), is changing how delivery and fulfillment companies are conducting their operations.
—Andrew Meola, Business Insider, 14 Oct. 2016

Both logic and logistics ultimately derive from the Greek logos, meaning "reason." But while logic derives directly from Greek, logistics took a longer route, first passing into French as logistique, meaning "art of calculating," and then into English from there.

Examples of logic in a Sentence

If you just use a little logic, you'll see I'm right. There's no logic in your reasoning. There's some logic to what he says. There's a certain logic in what he says. The revolution proceeded according to its own logic. the logic of the situation
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Recent Examples on the Web The logic made sense, and the execution was even better. Dave Birkett, Detroit Free Press, "No quarterback, no problem for Detroit Lions at Dan Campbell's first rookie minicamp," 16 May 2021 For example, logic would dictate Medina Spirit as the betting favorite for the Preakness. Chris Bumbaca, USA TODAY, "NBC whiz Steve Kornacki becomes gambling expert for Preakness: 'Like looking at election returns'," 15 May 2021 Hynix too has announced ambitions to get into logic chips. Sam Kim, Fortune, "South Korea joins global chipmaking race with $450 billion spending plan," 14 May 2021 By Gaskin’s logic, the prepper shows will simply return to the conservative regions and their stockpiling will recommence for the hellscape of a Joe Biden presidency. Adam Nemett, Rolling Stone, "Journal of a Progressive Prepper," 14 May 2021 The orchestrator applies conditional access logic and authenticates the user with multifactor authentication (MFA). Eric Olden, Forbes, "Why Identity Needs A Distributed Computing Mindset," 13 May 2021 The logic-defying safety of these bridges has been a major selling point. NBC News, "Man left clinging to shattered glass bridge in northern China," 11 May 2021 The slots would open up randomly with no intimation or logic, and so the only way to get an appointment was to keep refreshing the website for hours. Ananya Bhattacharya, Quartz, "Indian techies have found workarounds to the government’s inefficient vaccine booking system," 7 May 2021 In biblical logic, holiness always requires sacrificial abandonment: Something must be handed over to God. Sohrab Ahmari, WSJ, "What We’ve Lost in Rejecting the Sabbath," 7 May 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'logic.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of logic

12th century, in the meaning defined at sense 1a(1)

History and Etymology for 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

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Learn More about logic

Time Traveler for logic

Time Traveler

The first known use of logic was in the 12th century

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Statistics for logic

Last Updated

18 May 2021

Cite this Entry

“Logic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/logic. Accessed 18 May. 2021.

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More Definitions for logic

logic

noun

English Language Learners Definition of logic

: a proper or reasonable way of thinking about or understanding something
: a particular way of thinking about something
: the science that studies the formal processes used in thinking and reasoning

logic

noun
log·​ic | \ ˈlä-jik How to pronounce logic (audio) \

Kids Definition of logic

1 : a proper or reasonable way of thinking about something : sound reasoning There's no logic in what you said.
2 : a science that deals with the rules and processes used in sound thinking and reasoning

Comments on logic

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