Phenomenon, (better phœnomenon, from φαινόμενον) made to appear, as a substantive, an appearance. Conversationally we denote by the word a striking or unusual appearance. In the Kantian philosophy it is used in contradistinction to noumenon.

Things become known to us only by the phenomena by which they address themselves to our perceptive faculties, but we are constrained by the laws of our mind to infer from such phenomena that there are noumena, things understood or conceived, of which the others are the manifestations; from appearances we infer the existence of something which is the ground and cause of them, which something, however, cannot be known in itself.

Pneumatology

Pneumatology. See Psychology.