The article reviews the uses of the term 'oikonomia' in Greek-speaking antiquity and illustrates how the term was used in all spheres of human existence and in various arts and sciences, usually denoting the prudent dispensation of the field resources. In this era the arts and sciences also received their own economies, and the term oikonomia, designating in most cases the prudent management of resources, appears in political theory, military strategy, law, finance, medicine, literary criticism, architecture, music, history and rhetoric. Among all the spheres, arts and sciences that were economized, the story of oikonomia in the field of rhetoric is at the center of this article's attention. As shown, the concept of oikonomia took an intermediate form between the realm of thought -that is, the domain of philosophy -and the realm of public speech -the domain of politics.