n.
Pronunciation: ˌ im-p ə - ' rä-t ə r, - ˌ to ̇ r
Function: noun
Etymology: Latin ― more at EMPEROR
Date: circa 1580
: a commander in chief or emperor of the ancient Romans
– im · per · a · to · ri · al \ ( ˌ )im- ˌ per- ə - ' to ̇ r- ē - ə l \ adjective