syllogism

Definition

Type of formal-logic argument in which only three sentences (called Propositions) are employed: (1) the major premise asserts a general relationship, (2) the minor premise asserts something about a specific case, and (3) the conclusion follows (is deduced from) the two premises. A famous example states “All men are mortal” (the major premise). “Socrates is a man” (the minor premise). “Therefore, Socrates is mortal” (the conclusion). Theory of syllogism was developed by the Greek philosopher Aristotle (384-322 B.C.).