tantra

Concise Oxford English Dictionary © 2008 Oxford University Press:
tantra /ˈtantrə, ˈtʌntrə/

▶noun

• 1 a Hindu or Buddhist mystical or magical text.

• 2 adherence to the doctrines or principles of the tantras, involving mantras, meditation, yoga, and ritual.

– derivatives
tantric adjective,
tantrism noun,
tantrist noun.

– origin Sanskrit, lit. ‘loom, groundwork, doctrine’, from tan ‘stretch’.