Wiktionary
n. (context philosophy English) A school of philosophy first proposed by Immanuel Kant It deals with the ethic of reciprocity and can be juxtaposed with transcendental realism in that it views things in terms of how they appear to the actor rather than how they actually are.
Wikipedia
Transcendental idealism is a doctrine founded by German philosopher Immanuel Kant in the 18th century. Kant's doctrine maintains that human experience of things is similar to the way they appear to us—implying a fundamentally subject-based component, rather than being an activity that directly (and therefore without any obvious causal link) comprehends the things as they are in themselves.
Usage examples of "transcendental idealism".
As this view is variously expressed by different writers, we find in it traces of Christian mysticism, of transcendental idealism, of vedantism, and of the modern psychology of the subliminal self.
Or he would commit himself more explicitly, in an assault on the whole system of transcendental idealism: “.
Modern transcendental idealism, Emersonianism, for instance, also seems to let God evaporate into abstract Ideality.