Definitions for "Upanishad"
(Sanskrit) "Near down sit (at the foot of the teacher)", Indian scripture teaching the mystical identity of Atman and Brahman; 108 in number.
Hindu scripture based on discourse of a guru with his disciple.
Ancient Hindu philosophical treatises commenting on the even earlier Vedas.
Keywords:  mystery, school
a mystery school
Keywords:  mandalas, three, collection, two, one
a collection of one, two or three mandalas
Keywords:  phenomenon, beyond, space, time
a phenomenon which is beyond time, beyond space