Epicheirema

(Gr. epicheirema) In Aristotle's logic a dialectical as distinct from an apodictic or an eristic syllogism. In later logic an argument one of whose premisses is established by a prosyllogism expressed in the form of an enthymeme. -- G.R.M.
Found on http://www.ditext.com/runes/e.html

epicheirema

syllogism confirmed by an incidental proposition
Found on http://phrontistery.info/e.html
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