This choral and intergenerational dictionary, in which many of the leading figures of feminism in Spain and Latin America participate, collects more than eighty entries with the most important concepts of feminist theory and movement that have crystallized throughout its three centuries of existence. history. From its origins at the dawn of modernity to "fourth wave" feminism, feminist theory has built an interpretive framework with great explanatory power to account for the social disadvantage of women, widening the civil and political limits of democracies , making those repressed political and existential issues visible and introducing them into public debate. The chosen concepts reflect a diverse, complex and transdisciplinary theoretical corpus, and express their extensive debates, struggles and claims against inequalities, discrimination and violence suffered due to gender. A dictionary for all audiences that also shows the presence of feminism in the academic and university spheres, in the media or in militant movements, providing complementary references to broaden their understanding. With it, it is intended to give an account, in a rigorous and pedagogical way, of the richness of feminism as critical thinking and a transformative tool, showing that there is no critical theory without political struggles and no political struggles without critical theory.