an argument for the existence of God, asserting that the contingency of each entity, and of the universe composed wholly of such entities, demands the admission of an adequate external cause, which is God.
British Dictionary definitions for cosmological argument
cosmological argument
noun
1.
(philosophy) one of the arguments that purport to prove the existence of God from empirical facts about the universe, esp the argument to the existence of a first cause Compare ontological argument (sense 1), teleological argument
Contemporary definitions for cosmological argument
noun
an argument for the existence of God because nature depends on something for its existence and the cosmos must therefore depend on a being for its existence