Terma (Tibetan: གཏེར་མ, Wylie: gter ma; "hidden treasure")[1] are various forms of hidden teachings that are key to Vajrayana and Tibetan Buddhist and Bon spiritual traditions. In the Vajrayana Nyingma school tradition, two lineages occur: an oral kama lineage and a revealed terma lineage. Tradition holds that terma teachings were originally esoterically hidden by eighth-century Vajrayana masters Padmasambhava and Yeshe Tsogyal, to be discovered at auspicious times by treasure revealers known as tertöns. As such, terma represent a tradition of continuous revelation in Vajrayana and Tibetan Buddhism.[2]
gter ma: Terma. 'Treasure.' 1) The transmission through concealed treasures hidden, mainly by Guru Rinpoche and Yeshe Tsogyal, to be discovered at the proper time by a 'tertön,' a treasure revealer, for the benefit of future disciples. It is one of the two chief traditions of the Nyingma School of Vajrayana Buddhism, the other being 'Kama.' This tradition is said to continue even long after the Vinaya of the Buddha has disappeared. 2) Concealed treasures of many different kinds, including texts, ritual objects, relics, and natural objects.