structural:scholar_edition
History of the concept

As of 2024, many dictionaries list "synonym for 'sex ' " as one of gender ' s meanings, alongside its sociocultural meaning. According to the Oxford English Dictionary, gender came into use as a synonym for sex during the twentieth century, initially as a euphemism, as sex was undergoing its own usage shift toward referring to sexual intercourse rather than male/female categories. During the last two decades of the 20th century, gender was often used as a synonym for sex in its non-copulatory senses, especially outside the social sciences. David Haig, writing in 2003, said "the sex/gender distinction is now only fitfully observed." Within the social sciences, however, use of gender in academia increased greatly, outnumbering uses of sex during that same period. In the natural sciences, gender was more often used as a synonym for sex. This can be attributed to the influence of feminism. Haig stated, "Among the reasons that working scientists have given me for choosing gender rather than sex in biological contexts are desires to signal sympathy with feminist goals, to use a more academic term, or to avoid the connotation of copulation." Haig also notes that "gender" became the preferred term when discussing phenomena for which the social versus biological cause was unknown, disputed, or actually an interaction between the two. In 1993, the US Food and Drug Administration (FDA) started to use gender instead of sex to avoid confusion with sexual intercourse. Later, in 2011, the FDA reversed its position and began using sex as the biological classification and gender as "a person's self-representation as male or female, or how that person is responded to by social institutions based on the individual's gender presentation."