Definitions for "Heart Sutra"
most commonly used of the sutras by Mahayana Buddhists; a concise extract of the teaching on emptiness (Chadwick 1999).
The extremely concise statement of the doctrine of Emptiness, regarded as the heart or essence of the vast Prajnaparamita (Perfection of Wisdom) Literature. In many Great Way traditions, the sutra is chanted regularly.
The Prajnaparamita Hridaya Sutra, one of several "perfection of wisdom" sutras in the Mahayana scriptures. Calculatedly paradoxical in its language ("there is no suffering, cause, cessation or path"). Central to most Mahayana schools.