: Hindu religious training or discipline through which an individual attains samadhi
2
: Hindu or Buddhist spiritual training through which an individual worships a formed image as a mediate step to the worship of a formless deity or principle
3
: the tantric evocation of a deity by means of spells and ritual for the purpose of getting control of the deity
Word History
Etymology
Sanskrit sādhana; akin to Sanskrit sādhu going straight to a goal