Empress
来自Big Physics
Middle English: from Old French emperesse, feminine of emperere (see emperor).
wiktionary
From Middle English emperice, emperesse, from Anglo-Norman and Old French empereriz, from Latin imperatrix, equivalent to emperor + -ess. Doublet of imperatrix. Compare modern French impératrice.
From Middle English empresse, from Anglo-Norman enpresser(“to press, to imprint”), from Old French empresser. Attested from the 15th or late 14th century. [1]
etymonline
empress (n.)
"woman who rules over an empire," mid-12c., emperice, from Old French emperesse, fem. of emperere (see emperor). Queen Victoria in 1876 became one as "Empress of India."