The dharmakāya is the body of the Dharma, the Buddha’s true nature as reality itself, beyond form and description. In some schools it is the realization of emptiness; in others the cosmic Buddha present in all things, as Vairocana in Huayan and Shingon.
Dharmakāya
The truth body of the Buddha: ultimate reality itself, identical with emptiness and suchness.
Also: Dharmakaya