noumenon (n.)youdaoicibaDictYouDict[noumenon 词源字典]
1796, "object of intellectual intuition" (opposed to a phenomenon), term introduced by Kant, from Greek noumenon "that which is perceived," neuter passive present participle of noein "to apprehend, perceive by the mind" (from noos "mind"). With passive suffix -menos.[noumenon etymology, noumenon origin, 英语词源]