[thing-in-it-self] 
[thingz-in-th
uhm-selvz] . Kantianism. | 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. Compare noumenon (def. 3). |
A notion in the philosophy of Immanuel Kant. A thing-in-itself is an object as it would appear to us if we did not have to approach it under the conditions of space and time.