/ˈdʒɛndər/
[noun] A category used to describe the social and cultural roles, identities, or characteristics associated with being male, female, or another identity; also used in grammar to classify nouns as masculine, feminine, or neuter.
Before it described people, 'gender' was purely a grammar term — a way to sort Latin nouns into boxes labeled masculine, feminine, or neuter.
The word 'gender' begins its life in classical Latin with the word 'genus,' meaning 'kind,' 'sort,' or 'type.' This Latin root is itself connected to the Proto-Indo-European root *gen-, meaning 'to give birth' or 'to produce,' a root so ancient and productive that it also gave rise to words like 'kin,' 'nature,' and 'generate.' The Latin 'genus' described any category of things that shared common qualities, from species of animals to types of people. It was, at heart, a word about classification — about putting the world into orderly groups.
Latin 'genus' traveled into Old French as 'gendre,' and then into Middle English as 'gender' during the 14th century. The path looks like this: Latin genus → Old French gendre → Middle English gender. In its earliest English uses, 'gender' was almost entirely a grammatical term. Medieval scholars used it to describe a system inherited from Latin, Greek, and other classical languages in which every noun was assigned one of three categories — masculine, feminine, or neuter. A table could be feminine, a sword masculine, a child neuter. These categories had little to do with biological sex; they were simply a grammatical sorting system that students had to memorize.
For several centuries, 'gender' lived quietly as a technical term inside grammar books. But even in the Middle Ages, writers occasionally used it more loosely to mean 'kind' or 'sort' in a general sense, echoing its Latin ancestor 'genus.' The word carried within it this double identity: a precise technical meaning in grammar, and a broader, vaguer sense of 'category' or 'type.' This duality would prove important much later, when the word was asked to do entirely new work.
The shift toward its modern, social meaning began in the mid-20th century. Psychologist John Money first used 'gender' in the 1950s to describe the social and psychological dimensions of being male or female, as distinct from biological sex. He needed a word that could separate what a person was born with physically from how they lived and identified socially, and 'gender' — with its long history of describing categories rather than biology — was a perfect fit. From academic psychology, the term spread into feminist theory in the 1970s, where writers like Ann Oakley drew a sharp distinction between 'sex' (biological) and 'gender' (social), arguing that many differences between men and women were created by society, not nature.
By the late 20th and early 21st centuries, 'gender' had expanded again. It moved beyond a simple binary — male or female — to describe a wider spectrum of identities, including non-binary, genderqueer, and others. This expansion has made 'gender' one of the most discussed and debated words in the modern English language. It is a remarkable journey for a word that began its English life simply helping schoolboys remember whether a Latin noun needed a masculine or feminine ending. From a grammatical filing system to one of the central concepts in contemporary social and political life, 'gender' has traveled further than almost any other word in the language.