Aro Dictionary

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form
The tendency of things to manifest characteristics and distinct existence. The tendency to appear solid, permanent, separate, continuous, and defined. This tendency is always only relative, due to the non-duality of form and emptiness.
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four naljors
The four naljors are the meditation practices that constitute the ngöndro (preliminary practices) of Dzogchen sem-dé. They are: shi-nè, lhatong, nyi’mèd, and lhundrüp.
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