The ancient Mimamsa school of Hinduism uses the term tantra extensively, and its scholars offer various definitions. For example:
Regarding the reception of tantra during the period of Hindu modernism in the 19th and 20th centuries, Samuel writes that this period saw "a radical reframing of yogic practices away from the Tantric context." Samuel notes that while Hindu Hatha yoga had its origins in a Saiva tantric context,
Mandalas and Yantras may be depicted in various ways, on paintings, cloth, in three dimensional form, made out of colored sand or powders, etc. Tantric yoga also often involves the mental visualization of a mandala or yantra. This is usually combined with mantra recitation and other ritual actions as part of a tantric sadhana (practice).