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[sil-uh-jahyz] /ˈsɪl əˌdʒaɪz/
verb (used with or without object), syllogized, syllogizing.
to argue or reason by syllogism.
Also, especially British, syllogise.
Origin of syllogize
late Middle English
1375-1425; late Middle English silogysen < Late Latin syllogizāre < Greek syllogízesthai to reason, equivalent to syl- syl- + logízesthai to reckon, infer, equivalent to lóg(os) discourse (see logos) + -izesthai -ize
Related forms
syllogization, noun
syllogizer, noun
nonsyllogizing, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for syllogize


to reason or infer by using syllogisms
Derived Forms
syllogization, syllogisation, noun
syllogizer, syllogiser, noun
Word Origin
C15: via Old French from Late Latin syllogizāre, from Greek sullogizesthai; see syllogism
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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