Significator
/sɪɡˈnɪfɪˌkeɪtə(ɹ)/
noun
One who, or that which, signifies.
A planet that is supposed to rule something.
“In this diagram there was one significator which pressed remarkably upon our astrologer's attention. ― Sir W. Scott”
A card representing a querent, question, or situation.
Synonyms: signifier