- 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 -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 tetrarchēs from Greek tetrarkhēs tetra- tetra- -arkhēs -arch