'Prosylogism' definitions:

Definition of 'Prosylogism'

From: GCIDE

Prosylogism \Pro*sy"lo*gism\, n. [Pref. pro- + syllogism.] (Logic) A syllogism preliminary or logically essential to another syllogism; the conclusion of such a syllogism, which becomes a premise of the following syllogism. [1913 Webster]