noumenon Meaning, Definition & Usage

  1. noun the intellectual conception of a thing as it is in itself, not as it is known through perception
    thing-in-itself.

WordNet


Nou"me*non noun
Etymology
NL. fr. Gr. the thing perceived, p. pr. pass. of to perceive, the mind.
Definitions
  1. (Metaph.) The of itself unknown and unknowable rational object, or thing in itself, which is distinguished from the phenomenon through which it is apprehended by the senses, and by which it is interpreted and understood; -- so used in the philosophy of Kant and his followers.

Webster 1913