Also found in: Thesaurus, Encyclopedia, Wikipedia.
1. Logic A form of deductive reasoning consisting of a major premise, a minor premise, and a conclusion; for example, All humans are mortal, the major premise, I am a human, the minor premise, therefore, I am mortal, the conclusion.
2. Reasoning from the general to the specific; deduction.
3. A subtle or specious piece of reasoning.
[Middle English silogisme, from Old French, from Latin syllogismus, from Greek sullogismos, from sullogizesthai, to infer : sun-, syn- + logizesthai, to count, reckon (from logos, reason; see leg- in Indo-European roots).]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
1. (Logic) a deductive inference consisting of two premises and a conclusion, all of which are categorial propositions. The subject of the conclusion is the minor term and its predicate the major term; the middle term occurs in both premises but not the conclusion. There are 256 such arguments but only 24 are valid. Some men are mortal; some men are angelic; so some mortals are angelic is invalid, while some temples are in ruins; all ruins are fascinating; so some temples are fascinating is valid. Here fascinating, in ruins, and temples are respectively major, middle, and minor terms
2. (Logic) a deductive inference of certain other forms with two premises, such as the hypothetical syllogism,if P then Q; if Q then R; so if P then R
3. (Logic) a piece of deductive reasoning from the general to the particular
4. (Logic) a subtle or deceptive piece of reasoning
[C14: via Latin from Greek sullogismos, from sullogizesthai to reckon together, from sul- syn- + logizesthai to calculate, from logos a discourse]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
syl•lo•gism(ˈsɪl əˌdʒɪz əm)
1. an argument of a form containing a major premise and a minor premise connected with a middle term and a conclusion, as “All A is C; all B is A; therefore, all B is C.”
2. deductive reasoning.
3. an extremely subtle, sophisticated, or deceptive argument.
[1350–1400; Middle English silogime < Old French < Latin syllogismus < Greek syllogismós=syllog- (see syllogize) + -ismos -ism]
syl`lo•gis′tic, syl`lo•gis′ti•cal, adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
a form of reasoning in which two propositions or premises are stated and a logical conclusion is drawn from them. Each premise has the subject-predicate form, and each shares a common element called the middle term.See also: Logic
a form of reasoning in which two statements are made and a logical conclusion is drawn from them. See also logic. — syllogistic, adj.See also: Argumentation
-Ologies & -Isms. Copyright 2008 The Gale Group, Inc. All rights reserved.
Switch to new thesaurus
|Noun||1.||syllogism - deductive reasoning in which a conclusion is derived from two premises|
deductive reasoning, synthesis, deduction - reasoning from the general to the particular (or from cause to effect)
ratiocination, conclusion - the proposition arrived at by logical reasoning (such as the proposition that must follow from the major and minor premises of a syllogism)
major premise, major premiss - the premise of a syllogism that contains the major term (which is the predicate of the conclusion)
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
syllogism[ˈsɪlədʒɪzəm] N → silogismo m
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005
n → Syllogismus m
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007
syllogism[ˈsɪləˌdʒɪz/əm] n → sillogismo
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995