Definition of moderatress in English:

moderatress

Pronunciation /ˌmɒdəˈreɪtrɪs/ /ˈmɒd(ə)rətrɪs/

noun

rare
  • A female moderator. (Chiefly in 17th century).

Origin

Early 17th century. From Middle French moderateresse, feminine form corresponding to modérateur see -tress.