- in the ancient Roman Empire, the ruler of part (orig. a fourth part) of a province
- a subordinate prince, governor, etc.
Origin of tetrarchMiddle English tetrarche ; from Ecclesiastical Late Latin tetrarcha ; from Classical Latin tetrarches ; from Classical Greek tetrarch?s: see tetra- and amp; -arch
- a. A subordinate ruler.b. One of four joint rulers.
- A governor of one of four divisions of a country or province, especially in the ancient Roman Empire.
- The commander of a subdivision of a phalanx in ancient Greece.
Origin of tetrarchMiddle English tetrarche, a Roman tetrarch, from Old French, from Late Latin tetrarcha, from Latin tetrarch&emacron;s, from Greek tetrarkh&emacron;s : tetra-, tetra- + -arkh&emacron;s, -arch.