Wikipedia
The dharmakāya (; , lit. "truth body" or "reality body") is one of the three bodies ( trikaya) of the Buddha in Mahayana Buddhism. Dharmakāya constitutes the unmanifested, "inconceivable" (acintya) aspect of a Buddha, out of which Buddhas arise and to which they return after their dissolution. Buddhas are manifestations of the dharmakāya called nirmanakaya ("transformation body"). Reginald Ray 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."
The Dhammakaya Movement of Thailand and the Tathāgatagarbha sūtras of ancient Indian tradition view the Dharmakaya as the true Self of the Buddha, present within all beings.
Usage examples of "dharmakaya".
Several sects adopted this embodied version of the Dharmakaya, or Body of the Doctrine, which had been thought of as the Absolute beyond all form and rational apprehension.