Definitionen
1.NounA governor or ruler of a quarter of a country, especially of a fourth part of a province in or client state of Ancient Rome.
2.NounEach of the four members of a jointly ruling tetrarchy, notably of the Roman Empire since Diocletian.
3.NounAn officer in charge of a fourth part of a phalanx in Ancient Greece.
4.AdjectiveHaving four vascular strands in a fibrovascular cylinder or stele.