Nine levels of the three realms

Nine levels of the three realms (Tib. ཁམས་གསུམ་ས་དགུ, kham sum sa gu, Wyl. khams gsum sa dgu) —

• the desire realm,
• the four dhyanas of the form realm and
• the four absorptions of the formless realm.

These are also referred to as the nine levels of meditative concentration.