Intersectionality refers to the interaction between gender, race, and other categories of difference in individual lives, social practices, institutional arrangements, and cultural ideologies and the outcomes of these interactions in terms of power (Davis 2008, p. 68). As a framework and concept within the social sciences, intersectionality has its roots in a seminal paper written by UCLA law professor Kimberlé Crenshaw titled “Demarginalizing the Intersection of Race and Sex: A Black Feminist Critique of Antidiscrimination Doctrine, Feminist Theory, and Antiracist Politics” (1989).
Text from: "Intersectionality," from the Encyclopedia of Race and Racism