blavatsky

noun

1. MadameElena Petrovna Blavatskaya, nee Hahn, 1831–91, Russian theosophist.

noun

1. Elena Petrovna (jɪˈljɛnə pɪˈtrɔvnə), called Madame Blavatsky . 1831–91, Russian theosophist; author of Isis Unveiled (1877)