- The ‘old’ tradition of Tibetan Buddhism. Aro is a Nyingma lineage. The Nyingma tradition was founded by Padmasambhava and Yeshé Tsogyel in the Eighth Century. It is based on the ‘old translations’ of Indian Tantras and on térma. Compare Sarma (the ‘new’ schools).
The Tibetan spelling is rNying ma.