Proposition may refer to: Proposition (philosophy) - (a) the "content" or "meaning" of a meaningful declarative sentence or (b) the pattern of symbols, marks, or sounds that make up a meaningful declarative sentence (c) whatever entities are true or false In logic and mathematics Propositional calculus (also propositional logic or sentential calculus) - a formal system in which formulae representing propositional formulas can be formed. Propositional formula - a type of syntactic formula which'… (More on Proposition)