significator

plural significators

1. One who, or that which, signifies.
2. astrologyA planet that is supposed to rule something.

   In this diagram there was one significator which pressed remarkably upon our astrologer's attention.

3. cartomancyA card representing a querent, question, or situation.

   In fact, I have fallen out of the habit of separating a significator from the deck because most layouts have positions to indicate the role that a person is acting out, or that otherwise reflect his status and state of mind.

   2001, Janina Renée, Tarot for a New Generation, Llewellyn Worldwide, →ISBN, page 17