"The Diamond Sūtra (Sanskrit: Vajracchedikā Prajñāpāramitā Sūtra) is a Mahāyāna (Buddhist) sūtra from the Prajñāpāramitā sutras or 'Perfection of Wisdom' genre. Translated into a variety of languages over a broad geographic range, the Diamond Sūtra is one of the most influential Mahayana sutras in East Asia, and it is particularly prominent within the Chan (or Zen) tradition, along with the Heart Sutra."
"The Sanskrit title for the sūtra is the Vajracchedikā Prajñāpāramitā Sūtra, which may be translated roughly as the "Vajra Cutter Perfection of Wisdom Sūtra" or "The Perfection of Wisdom Text that Cuts Like a Thunderbolt". In English, shortened forms such as Diamond Sūtra and Vajra Sūtra are common. The title relies on the power of the vajra (diamond or thunderbolt, but also an abstract term for a powerful weapon) to cut things as a metaphor for the type of wisdom that cuts and shatters illusions to get to ultimate reality. The sutra is also called by the name "Triśatikā Prajñāpāramitā Sūtra" (300 lines Perfection of Insight sutra)."
(from Wikipedia)
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