Sexism supports patriarchy as racism supports slavery. Generally known definitions. The hatred of women. A brand new, and not widespread, concept. This word is not usually found in dictionaries.
Women are completely economically dependent on men.
Women are subordinated in family and society. Women have very few rights in relation to men's power and prerogatives. In classical patriarchy, there is a preference for sons over daughters, because sons stay with the parents and support them in their old age, while daughters are seen as economic liabilities who will be married into another family often at great cost to the parents. The preference for sons can result in various forms of female infanticide. The point of view that women are fully human and have the same range of capacities as men, and therefore that women should have the freedom to develop and use their talents as they choose.