An enthymeme (enthýmēma), in its modern sense,'s an informally stated syllogism (a three-part deductive argument) with an unstated assumption that must be true for the premises to lead to the conclusion. In an enthymeme, part of the argument's missing because it's assumed. In a broader usage, the term "enthymeme"'s sometimes used to describe an incomplete argument of forms other than the syllogism. For Aristotle, who defined it in his Rhetoric, an enthymeme was a "rhetorical syllogism"… (More on Enthymeme)