Arūpa-Loka

A Sanskrit compound from arūpa, without form, and loka, world or plane, hence “Formless World.” This term appears several times in The Mahātma Letters to A. P. Sinnett and subsequent theosophical writings. KĀMA-LOKA, Rūpa-loka, and Arūpa-loka (all Sanskrit words) are the three spheres of ascending spirituality into which the several groups of subjective entities enter. Arūpa-loka is the highest state of Devachan (Heaven).

See Devachan.

P.S.H.