Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

syllogism

play
noun syl·lo·gism \ˈsi-lə-ˌji-zəm\

Simple Definition of syllogism

  • : a formal argument in logic that is formed by two statements and a conclusion which must be true if the two statements are true

Full Definition of syllogism

  1. 1 :  a deductive scheme of a formal argument consisting of a major and a minor premise and a conclusion (as in “every virtue is laudable; kindness is a virtue; therefore kindness is laudable”)

  2. 2 :  a subtle, specious, or crafty argument

  3. 3 :  deductive reasoning

syl·lo·gis·tic play \ˌsi-lə-ˈjis-tik\ adjective
syl·lo·gis·ti·cal·ly play \-ti-k(ə-)lē\ adverb

Examples of syllogism

  1. An example of a syllogism is: All men are human; all humans are mortal; therefore all men are mortal.



Origin of syllogism

Middle English silogisme, from Anglo-French sillogisme, from Latin syllogismus, from Greek syllogismos, from syllogizesthai to syllogize, from syn- + logizesthai to calculate, from logos reckoning, word — more at legend


First Known Use: 14th century

Rhymes with syllogism

absurdism, activism, Adventism, alarmism, albinism, alpinism, anarchism, aneurysm, anglicism, animism, aphorism, Arabism, archaism, asterism, atavism, atheism, atomism, atticism, Bahaism, barbarism, Benthamism, biblicism, blackguardism, bolshevism, boosterism, botulism, bourbonism, Brahmanism, Briticism, Caesarism, Calvinism, can-do-ism, careerism, Castroism, cataclysm, catechism, Catharism, centralism, chauvinism, chimerism, classicism, communism, concretism, conformism, cretinism, criticism, cronyism, cynicism, dadaism, dandyism, Darwinism, defeatism, de Gaullism, despotism, die-hardism, dimorphism, Docetism, do-goodism, dogmatism, Donatism, Don Juanism, druidism, dynamism, egoism, elitism, embolism, endemism, erethism, ergotism, erotism, escapism, Essenism, etatism, eunuchism, euphemism, euphuism, exorcism, expertism, extremism, fairyism, familism, fatalism, feminism, feudalism, fideism, fogyism, foreignism, formalism, futurism, gallicism, galvanism, gangsterism, genteelism, Germanism, giantism, gigantism, globalism, gnosticism, Gongorism, Gothicism, gourmandism, gradualism, grangerism, greenbackism, Hasidism, heathenism, Hebraism, hedonism, Hellenism, herbalism, hermetism, hermitism, heroism, highbrowism, Hinduism, hipsterism, hirsutism, hispanism, Hitlerism, hoodlumism, hoodooism, hucksterism, humanism, Hussitism, hybridism, hypnotism, Ibsenism, idealism, imagism, Irishism, Islamism, Jansenism, jim crowism, jingoism, journalism, John Bullism, Judaism, Junkerism, kabbalism, kaiserism, Krishnaism, Ku Kluxism, laconism, laicism, Lamaism, Lamarckism, landlordism, Latinism, legalism, Leninism, lobbyism, localism, locoism, Lollardism, luminism, lyricism, magnetism, mammonism, mannerism, Marcionism, masochism, mechanism, melanism, meliorism, Menshevism, Mendelism, mentalism, methodism, me-tooism, modernism, Mohockism, monachism, monadism, monarchism, mongolism, Montanism, moralism, Mormonism, morphinism, mullahism, mysticism, narcissism, nationalism, nativism, nepotism, neutralism, nihilism, NIMBYism, nomadism, occultism, onanism, optimism, oralism, Orangeism, organism, ostracism, pacifism, paganism, Pan-Slavism, pantheism, Parsiism, passivism, pauperism, phallicism, pianism, pietism, Platonism, pleinairism, pluralism, pointillism, populism, pragmatism, presentism, privatism, prosaism, Prussianism, puerilism, pugilism, Puseyism, Pyrrhonism, Quakerism, quietism, rabbinism, racialism, rationalism, realism, reformism, rheumatism, rigorism, robotism, Romanism, Rousseauism, rowdyism, royalism, satanism, saturnism, savagism, scapegoatism, schematism, scientism, sciolism, Scotticism, Semitism, Shakerism, Shintoism, skepticism, socialism, solecism, solipsism, Southernism, specialism, speciesism, Spartanism, Spinozism, spiritism, spoonerism, Stalinism, standpattism, stoicism, symbolism, synchronism, syncretism, synergism, talmudism, tarantism, tectonism, tenebrism, terrorism, Teutonism, titanism, Titoism, toadyism, tokenism, Toryism, totalism, totemism, transvestism, traumatism, tribalism, tritheism, Trotskyism, ultraism, unionism, urbanism, utopism, Vaishnavism, vampirism, vandalism, vanguardism, Vedantism, veganism, verbalism, virilism, vitalism, vocalism, volcanism, voodooism, vorticism, voyeurism, vulcanism, vulgarism, Wahhabism, warlordism, welfarism, Wellerism, witticism, womanism, yahooism, Yankeeism, Yiddishism, Zionism, zombiism


Learn More about syllogism


Seen and Heard

What made you want to look up syllogism? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

February 7, 2016

a slight offense

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image1037863653

Which of the following refers to thin, bending ice, or to the act of running over such ice?

duvet spindrift pince-nez kittly-benders
Name That Thing

10 quick questions: hear them, spell them, and see how your skills compare to the crowd.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ