Semde

Semde (Tibetan: སེམས་སྡེ, Wylie: sems sde; Sanskrit: cittavarga) translated as "mind division", "mind class" or "mind series" is the name of one of three scriptural and lineage divisions within Atiyoga, Dzogchen or the Great Perfection which is itself the pinnacle of the ninefold division of practice according to the Nyingma school of Tibetan Buddhism.