Skip to definition.
Get the FREE one-click dictionary software for Windows or the iPhone/iPad and Android apps

Noun: modus ponens  ,mow-dus'pow-nenz
  1. (logic) a valid form of argument in which the antecedent of a conditional proposition is affirmed, thereby entailing the affirmation of the consequent:If P then Q, and P is true, therefore Q.

Encyclopedia: Modus ponens