Patriarchy is a social system in which males hold primary power and predominate in roles of political leadership, moral authority, social privilege and control of property. In the domain of the family, fathers or father-figures hold authority over women and children. Some patriarchal societies are also patrilineal, meaning that property and title are inherited by the male lineage.
Historically, patriarchy has manifested itself in the social, legal, political, religious and economic organization of a range of different cultures. Even if not explicitly defined to be by their own constitutions and laws, most contemporary societies are, in practice, patriarchal.
Patriarchy literally means "the rule of the father" and comes from the Greek πατριάρχης (patriarkhēs), "father of a race" or "chief of a race, patriarch", which is a compound of πατριά (patria), "lineage, descent" (from πατήρ patēr, "father") and ἄρχω (arkhō), "I rule".
Historically, the term patriarchy was used to refer to rule by the male head of a family. However, in modern times, it more generally refers to social systems in which power is primarily held by adult men. One example definition of patriarchy by Sylvia Walby is "a system of interrelated social structures which allow men to exploit women." According to April A. Gordon, Walby's definition allows for the variability and changes in women's roles and in the order of their priority under different patriarchal systems. It also recognizes that it is the institutionalized subordination and exploitation of women by men that is the crux of patriarchy; this can take many forms. It is even theoretically possible that patriarchy could express itself through a deemphasis on motherhood in favor of women as wage earners or some other role.
Terms with similar etymology are also used in various social sciences and humanities to describe patriarchal or patriological aspects of social, cultural and political processes. Adjective patriological is derived from the noun patriology that comes from two Greek words: πατέρας (pateras, father) and λογος (logos, teaching about). The term patriology originated in theological studies as a designation for particular theological discipline that studies the person and works of God the Father (see: Patriology (Christianity)). In modern times, the term was borrowed by social sciences and humanities and its meaning was widened in order to describe and define particular male-dominated and male-centered aspects of cultural and social life.