Atma

the principle of life.
the individual self, known after enlightenment to be identical with Brahman.
(initial capital letter) the World Soul, from which all individual souls derive, and to which they return as the supreme goal of existence.
Historical Examples

In a frenzy I broke my way through the attendants, and rushed through hall and corridor to my atma’s chamber.
The Captain of the Pole-Star and Other Tales Arthur Conan Doyle

In Sanscrit that eternal part is called by many names, but the best seems that used in this passage, atma.
Thoughts on Life and Religion Friedrich Max Mller

Are they going to start something now that will get atma in jail?
Plays Susan Glaspell

noun (Hinduism)
the personal soul or self; the thinking principle as manifested in consciousness
Brahman considered as the Universal Soul, the great Self or Person that dwells in the entire created order
n.

1785, from Sanskrit atma “essence, breath, soul,” from PIE *etmen “breath” (a root found in Sanskrit and Germanic, cf. Old English æðm, Dutch adem, Old High German atum “breath,” Old English eþian, Dutch ademen “to breathe”).