Augustae

Augusta (Classical Latin: [au̯ˈɡʊsta]; plural Augustae; Greek: αὐγούστα) was a Roman imperial honorific title given to empresses and women of the imperial families. It was the feminine form of Augustus. In the third century, Augustae could also receive the titles of Mater Senatus ("Mother of the Senate"), Mater Castrorum ("Mother of the Camp"), and Mater Patriae ("Mother of the Fatherland").