Ab-Soo (Chaldean)
- the mystic name for Space, meaning the dwelling of Ab the "Father", or the head of the source of the waters of knowledge. The lore of the latter of concealed on the invisible space or akasic regions. - theosophical glossary

Other names include:
Tibetan - Tong-pa-nnid
Buddhists of the Mahayana - Sunyata
Scandanavia - Ginnungagap
Babylonian - Mummu Tiamatu
Chaldaeo-Jewish - Ain Soph
Chinese - Tsi-tsai