Dharmakāya

Dharmakāya (devanāgarī: धर्म काय) is a Sanskrit word meaning "truth body" or "reality body". In Mahayana Buddhism it is one of the three bodies (Trikayas) of the Buddha. Dharmakaya constitutes the unmanifested, "inconceivable" aspect of a Buddha, out of which Buddhas arise and to which they return after their dissolution.

In Mahayana Buddhism

Buddhas are manifestations of the dharmakaya called nirmanakaya (Skt: Transformation body). One Buddhist scholar writes of it as: 'the body of reality itself, without specific, delimited form, wherein the Buddha is identified with the spiritually charged nature of everything that is.'[1]

In Theosophy

In one of the Mahatma Letters to A. P. Sinnett Dharmakāya is defined as "the mystic, universally diffused essence", and is identified with Yin Sin ("the one form of existence") and also "Adi-Buddhi"