A person who adheres to or advocates theosophy, a religious philosophy or system of thought that seeks to understand the mysteries of the universe and the bonds that unite the universe, humanity, and the divine.

The theosophist spent years studying ancient texts to gain a deeper understanding of spiritual truths.

(capitalized) A member of the Theosophical Society, founded in 1875 to promote the comparative study of religion, philosophy, and science.

As a Theosophist, she attended the society's annual convention in Adyar.