Heterodox spiritual doctrine and body of knowledge that originated around the sixth and seventh centuries CE in the Indian subcontinent, largely in Kashmir and Nepal, but also in Bengal and Assam, later spreading further south. The basic premise of Tantra is the body’s divinity and the senses as means to spiritual bliss. Some key features of Tantric ritual include the use of mantras (sacred chants), mandalas (symbolic geometrical drawings), and mudras (hand gestures). Tantra developed out of non-Vedic cultures, drawing much of its material from earlier Shaivism, though Tantric sects emerged in Vaishnavism, Buddhism and Jainism too. Important Tantric deities include Bhairava and Kali. There is huge variation in belief and practice across Tantric sects. Despite many of these sects being historically at odds with elite forms of Brahmanism, Tantrism has been enormously influential in mainstream Hinduism as it is practised today; its followers are known as Tantrikas. The term tantra is Sanskrit for ‘loom’ or ‘warp.