from
The Collaborative International Dictionary of English v.0.48
Enthymeme \En"thy*meme\, n. [Gr. ?, fr. ? to keep in mind,
consider; ? in + ? mind, soul.] (Logic)
An argument consisting of only two propositions, an
antecedent and consequent deduced from it; a syllogism with
one premise omitted; as, We are dependent; therefore we
should be humble. Here the major proposition is suppressed.
The complete syllogism would be, Dependent creatures should
be humble; we are dependent creatures; therefore we should be
humble.
[1913 Webster]