Aro Dictionary

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series
Dzogchen is divided into three ‘series’ (or ‘categories’ – Tibetan ): sem-dé, long-dé, and men-ngag-dé. These three contain progressively less conceptual content. There is much to say about sem-dé, less about long-dé, and virtually nothing about men-ngag-dé.
The Tibetan spelling is sDe.
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