Transcendental Argument: "An argument that elucidates the conditions for the possibility of some fundamental phenomenon whose existence is unchallenged or uncontroversial in the philosophical context in which the argument is propounded. Such an argument proceeds deductively, from a premise asserting the existence of some basic phenomenon (such as meaningful discourse, conceptualization of objective states of affairs, or the practice of making promises), to a conclusion asserting the existence of some interesting, substantive enabling conditions for that phenomenon. The term derives from Kant’s Critique of Pure Reason, which gives several such arguments."
Audi, R. (Ed.). (1999). The Cambridge Dictionary of Philosophy (2nd ed.). New York, NY: Cambridge University Press