logic

Wikipedia

English

Alternative forms

• logick (archaic)

Etymology

From Old French logique, from Latin logica, from Ancient Greek λογική (logike, “logic”), from properly feminine of λογικός (logikós, “of or pertaining to speech or reason or reasoning, rational, reasonable”), from λόγος (logos, “speech, reason”).

Pronunciation

• (RP) enPR: lŏj'ĭk, IPA: /ˈlɒdʒɪk/, SAMPA: /"lQdZIk/
• (US) enPR: lŏj'ĭk, IPA: /ˈlɑːdʒɪk/, SAMPA: /"lA:dZIk/

• Audio (US)

  (file)

• Rhymes: -ɒdʒɪk

Noun

Wikipedia logic (countable and uncountable; plural logics)

1. (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.
2. (philosophy, logic) The study of the principles and criteria of valid inference and demonstration.
3. (uncountable) (mathematics) The mathematical study of relationships between rigorously defined concepts and of proof of statements.
4. (countable) (mathematics) A formal or informal language together with a deductive system or a model-theoretic semantics.
5. (uncountable) 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. (uncountable) 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.

Synonyms

• (mathematics, study): formal logic, modern logic
• (mathematics, system): formal system
• (philosophy): predicate logic

Related terms

• logician
• logical

Derived terms

Derived terms

Aristotelian logic Boolean logic chop logic combinational logic computability logic deontic logic diode logic diode-transistor logic first-order logic formal logic fuzzy logic intensional logic interpretability logic intuitionistic logic logic chopper many-sorted logic

material logic mathematical logic modal logic modern logic multi-valued logic negative logic non-Aristotelian logic philosophical logic positive logic predicate logic propositional logic provability logic resistor-transistor logic sequential logic symbolic logic traditional logic transistor-transistor logic

Translations

method of human thought

Albanian: logjikë (sq) f. Arabic: منطق (ar) (mánTaq) m. Azeri: məntiq (az) Chinese: Mandarin: 邏輯 (cmn), 逻辑 (cmn) (luóji), 論理 (cmn), 论理 (cmn) (lùnlǐ) Croatian: lògika (hr) f. Czech: logika (cs) f. Dutch: logica (nl) f. Finnish: logiikka (fi) French: logique (fr) f. Galician: lóxica (gl) f. German: Logik (de) f. Greek: λογική (el) (logikí) f. Hebrew: הגיון (he) (higayon) Hindi: तर्क (hi) (tark) Hungarian: logika (hu) Italian: logica f., logica matematica f.

Japanese: 論理 (ja) (ろんり, ronri) Khmer: តក្ក (km) Korean: 논리 (ko) (nolli) (論理 (ko)) Macedonian: логика (mk) (lógika) f. Norwegian: logikk (no) m. Persian: منطق (fa) (manteq) Polish: logika (pl) f. Portuguese: lógica (pt) f. Romanian: logică (ro) f. Russian: логика (ru) (lógika) f. Slovak: logika (sk) f. Slovene: logika (sl) f. Spanish: lógica (es) f. Swedish: logik (sv) c. Telugu: తర్కం (tharkam) Turkish: mantık (tr) Urdu: ترک (ur) (tark) Vietnamese: luận lý (vi) (論理 (vi))

mathematical study

Arabic: منطق (ar) (mánTaq) m. Azeri: məntiq (az) Croatian: lògika (hr) f. Czech: logika (cs) f. French: logique (fr) f. Galician: lóxica (gl) f. German: Logik (de) f. Greek: λογική (el) (logikí) f. Hebrew: הגיון (he) (higayon) m. Italian: logica (it) f. Japanese: 論理学 (ja) (ろんりがく, ronrigaku)

Macedonian: логика (mk) (lógika) f. Norwegian: logikk (no) m. Persian: منطق (fa) (manteq) Polish: logika (pl) f. Portuguese: lógica (pt) f. Russian: логика (ru) (lógika) f. Slovak: logika (sk) f. Slovene: logika (sl) f. Swedish: logik (sv) c. Turkish: mantık (tr)

formal or informal language

Croatian: lògika (hr) f. Galician: lóxica (gl) f. German: Logik (de) f. Greek: λογική (el) (logikí) f.

Macedonian: логика (mk) (lógika) f. Norwegian: logikk (no) m. Polish: logika (pl) f. Portuguese: lógica (pt) f.

any system of thought, irrespective of its rigor or productiveness

Croatian: lògika (hr) f. Czech: logika (cs) f. French: logique (fr) f. Galician: lóxica (gl) f. German: Logik (de) f. Greek: λογική (el) (logikí) f. Hebrew: הגיון (he) (higayon) m. Italian: logica (it) f. Japanese: 論理 (ろんり, ronri)

Macedonian: логика (mk) (lógika) f. Norwegian: logikk (no) m. Persian: منطق (fa) (manteq) Polish: logika (pl) f. Portuguese: lógica (pt) f. Slovak: logika (sk) f. Slovene: logika (sl) f. Swedish: logik (sv) c.

part of an electronic system that performs the boolean logic operations

Croatian: lògika (hr) f. Greek: λογική (el) (logikí)

Portuguese: lógica (pt) f.

Verb

logic (third-person singular simple present logics, present participle logicking, simple past and past participle logicked)

1. (intransitive, pejorative) To engage in excessive or inappropriate application of logic.
   • 1884, w:Orestes Augustus Brownson, Controversy, page 21:

     Nay, is not the author himself "logicking" against logic, from the beginning of his book to the end ?

2. (transitive) To apply logical reasoning to.
   • 2010, James Ellroy, Blood's a Rover, page 90:

     He logicked that one out. He snuck into Haiti and scored herbs to rev him and calm him.

3. (transitive) To overcome by logical argument.
   • 2010, Jade Lee, Wicked Surrender:

     If things had gone as usual this night, if Kit had not logicked her into agreement, then she probably would have opened the door tonight.

External links

• logic in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913
• logic in The Century Dictionary, The Century Co., New York, 1911
• logic at OneLook Dictionary Search