1) Tibetan Buddhist text 
A tertön ({bo|t=གཏེར་སྟོན་|w=gter ston|l=}) is a discoverer of ancient texts or terma in Tibetan Buddhism. Many tertöns are considered incarnations of the 25 main disciples of Padmasambhava. A vast system of transmission lineages developed. Nyingma scriptures were updated by terma discoveries, and terma teachings have guided ...