senatress

noun

1. (uncommon)A female senator.

   “Heliogabalus introduced his Mother into the Senate, and she took her Place there by the Seats of the Consuls, and was present at passing a Decree of the Senate. This Emperor made the first Senatress; he created a little Senate of Women, which met on Collis Quirinalis under the Direction of Semiamira, and the Laws they made concerning the Ladies, ....”

   “The researches of the learned Coppi make it almost certain that the Colonna descend from Theodora, the Senatress of Roma, who flourished in the year 914; ....”

   “"And I take pleasure in presenting to you a lady you all know, State Senator Rumbley—or is it Senatress?"”

   “"If I said the lady was an elected representative of the US people, with strange political notions and strong presidential ambitions, would that help?" I whistled softly. "You mean the senatress, herself?"”

   “This scandal resulted in the intervention by a US congresswoman and future US senatress (as she preferred to be called) and vice president of the United States of America ....”