syllogize

[sil-uh-jahyz] /ˈsɪl əˌdʒaɪz/
verb (used without object), verb (used with object), syllogized, syllogizing.
1.
to argue or reason by syllogism.
Also, especially British, syllogise.
Origin
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
British Dictionary definitions for syllogize

syllogize

/ˈsɪləˌdʒaɪz/
verb
1.
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