Aro Dictionary

Spiritual treasures that were hidden by a Buddha such as Padmasambhava or Yeshé Tsogyel and subsequently revealed by a Tértön. (Térma is also transcribed as ter, gTér, terma, or gTérma.) The Aro gTér is a pure-vision térma discovered by Aro Lingma.
The Tibetan spelling is gTer ma.