Mahatmas

In the Theosophical Glossary H. P. Blavatsky defines the term as follows:

Mahatma. Lit., "great soul". An adept of the highest order. Exalted beings who, having attained to the mastery over their lower principles are thus living unimpeded by the "man of flesh", and are in possession of knowledge and power commensurate with the stage they have reached in their spiritual evolution. Called in Pali Rahats and Arhats.