(in the Roman Empire) the governor of one of four divisions of a country or province (古罗马帝国行省或属国的)四分之一地区的长官 ■one of four joint rulers 四个联合统治者之一 ■(archaic)a subordinate ruler (古)小郡主;小领主
派生 tetrarchy ( pl. -ies) noun(pl. -ies) 语源
Old English, from late Latin tetrarcha, from Latin tetrarches, from Greek tetrarkhēs, from tetra- 'four' + arkhein 'to rule'