Etymology
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atman (n.)
in Hindu philosophy, the self or soul, 1785, from Sanskrit atma "essence, breath, soul," from PIE *etmen "breath" (a root found in Sanskrit and Germanic; source also of Old English æðm, Dutch adem, Old High German atum "breath," Old English eþian, Dutch ademen "to breathe").
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mahatma (n.)

title applied to an adept in Brahmanism, literally "great-souled," from Sanskrit mahatman, from maha "great" (from PIE root *meg- "great") + atman, "soul, principle of life," properly "breath" (see atman). In esoteric Buddhism, "a person of supernatural powers." In common use, as a title, a mark of love and respect. Said to have been applied to Gandhi (1869-1948) in 1915, perhaps by poet Rabrindranath Tagore. The earliest use of the word in English, however, is among the theosophists, who applied it to certain imaginary beings with preternatural powers (1884).

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