bcud len

བཅུད་ལེན

rejuvenation practice; extracting the essence; rasayana. One of the eight common siddhis/accomplishments thun mong gi dngos grub brgyad extraction of nutrients, [the art of] extracting essence, alchemy. a means of extracting the elixir of minerals from the earth and subsisting upon it. essence-extract, extracting essences extraction of nutrients; alchemy / extracting the quintessence [RY]

elixir, alchemy, art of extracting essences for prolonging health and longevity, rasayana, the preparation and use of the long life elixirs, extraction of nutrients [JV]

alchemy/ alchemical transmutation [=ra sa ya na] [RB]

1) rasayana; 2) extracting nutrients from food [IW]