That which is attained to, or obtained by exertion; acquirement; acquisition; (pl.), mental acquirements; knowledge; as, literary and scientific attainments.
'Siddhi' in Sanskrit. These are of two types: common attainments and supreme attainments. Common attainments are of four principal types: pacifying attainments (the ability to purify negativity, overcome obstacles and cure sickness), increasing attainments (the ability to increase Dharma realizations, merit, lifespan, and wealth), controlling attainments (the ability to control one's own and others' minds and actions), and wrathful attainments (the ability to use wrathful actions where appropriate to benefit others). Supreme attainments are the special realizations of a Buddha. See Tantric Grounds and Paths.