The present work, though non-technical in nature, is comprehensive,and apart from dealing with the Tantric terms and conceptspertaining to various forms of religious system, also containsentries on extra-religious contents of Tantrism such as chemicaland medical sciences, philosophical speculations especially onmetaphysics and epistemology, yoga and physical exercises. Tantricdeities are also dealt with -- the hundreds of gods and goddesseswho have no independent and real existence apart from the mind ofthe worshipper and the manner of worship. Tantric texts, with briefdetails of their contents and publication, are recorded. All theimportant entries contain textual references which will proveuseful to scholars and researchers. The volume also contains alarge and updated bibliography and a comprehensive introduction. \n