When discussing males and females, feminists wanting to remove references to sexuality from contexts which don’t involve mating or reproduction revived an older meaning of “gender" which had come to refer in modern times chiefly to language, as a synonym for “sex" in phrases such as “Our goal is to achieve gender equality."
Americans, always nervous about sex, eagerly embraced this usage, which is now standard. In some scholarly fields, “sex" is used to label biologically determined aspects of maleness and femaleness (reproduction, etc.) while “gender" refers to their socially determined aspects (behavior, attitudes, etc.); but in ordinary speech this distinction is not always maintained.
It is disingenuous to pretend that people who use “gender" in the new senses are making an error, just as it is disingenuous to maintain that “Ms." means “manuscript" (that’s “MS" ).
Nevertheless, I must admit I was startled to discover that the tag on my new trousers describes not only their size and color, but their “gender."
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