Tantra in Hinduism refers to a diverse family of scriptures, ritual systems, and lineages rather than one technique. Hindu tantric traditions developed especially within Śaiva, Śākta, and related communities and can include mantra, visualization, deity worship, yantra, meditation, ritual offerings, and initiation.
Mantra and deity practice
Tantric practice often uses mantras received from a teacher within a lineage. A mantra may be associated with a deity and repeated as part of worship, meditation, or ritual.
Deity visualization can involve imagining a sacred form, its attributes, and the practitioner’s relationship to it.
Yantra and ritual space
Yantras are geometric sacred diagrams used in some tantric traditions. The Śrīcakra, for example, is important in Śrīvidyā traditions.
Ritual may include offerings, gestures, recitations, consecration, and careful construction of sacred space.
The role of initiation
Many tantric practices are traditionally transmitted through dīkṣā, or initiation, and guided by a guru. This reflects the belief that some practices require preparation, context, and responsibility.
Public descriptions of Tantra should therefore distinguish general information from instructions intended only for initiated practitioners.
Tantra is more than sexuality
Popular Western usage often reduces Tantra to sexual techniques. Historical Hindu Tantra is much broader and includes theology, temple ritual, mantra, yoga, cosmology, and liberation.
Some traditions do include transgressive or sexual symbolism, but these are not representative of all Tantra and may be interpreted literally, ritually, or symbolically depending on lineage.
A careful summary
Hindu tantric practice is a complex lineage-based religious world. General features can be explained publicly, but specific esoteric practices should be understood within their traditional context.