Spirit Soul: Meanings of Atma

                                                                  Q. In the Bhagavad Gita we find the word "atma" used to denote the mind, body and soul and even senses, as defined in the Vedic Dictionary.

                                                                  My question is: If the soul is an eternal, spiritual particle, why is it lumped in with these other subtle and gross material objects under the word "atma?"