優波尼沙土
Từ Điển Thuật Ngữ Phật Học Hán Ngữ
(or 優波尼沙陀) Upaniṣad, also (婆波尼曇; certain philosophical or mystical writings by various authors at various periods ‘attached to the Brāhmaṇas, the aim of which is the ascertainment of the secret of the Veda (they are more than a hundred in number, and are said to have been the source of the six darśanas, or systems of philosophy)’. M.W. The best known is the Bṛhad-āraṇyaka.