Augusta \a(u)-gus-ta, aug(u)-sta\ as a girl's name is pronounced aw-GUS-tah. It is of Latin origin, and the meaning of Augusta is "great, magnificent". Feminine form of August or Augustus. Imported to England by the German mother of George III. Literary: P.G. Wodehouse's foppish hero Bertie Wooster had a terrifying Aunt Augusta, possibly giving the name a slightly intimidating connotation. Popular in Britain toward the end of the 19th century.