ˈsädənə noun
( -s )
Etymology: Sanskrit sādhana; akin to Sanskrit sādhu going straight to a goal
1. : 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