nEpichirema(Rhet. & Logic) A syllogism in which the proof of the major or minor premise, or both, is introduced with the premises themselves, and the conclusion is derived in the ordinary manner.
Century Dictionary and Cyclopedia
nepichiremaAs used by Aristotle, a reasoning based on premises generally admitted but open to doubt.
nepichiremaAs commonly used, a syllogism having the truth of one or both of its premises confirmed by a proposition annexed (called a prosyllogism), so that an abridged compound argument is formed: as, All sin is dangerous; covetousness is sin (for it is a transgression of the law); therefore, covetousness is dangerous. “For it is a transgression of the law” is a prosyllogism, confirming the proposition that “covetousness is sin.”