Meaning of thing-in-itself

thing-in-it•self

Pronunciation: (thing"in-it-self'), [key]
— pl. things-in-them•selves
  1. reality as it is apart from experience; what remains to be postulated after space, time, and all the categories of the understanding are assigned to consciousness. Cf.(def. 3).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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