Emily's Cat
Rarely prone to hissy-fits
That definition is presented by sociologists and gender studies clinicians, maybe some psychologists with a particular interest in gender identity. Then they get referenced by each other until the end of time. It's turtles all the way down.Kinda have, dramatic periods ommited.
Eta: your edit question: the entirety of scientific subject matter in the English language has acknowledged the difference between sex and gender, considering it important to varying degrees, of course.
While discussing this on this and many other threads, definitions are presented by a myriad of scientific bodies. I have yet to see a single one that claims sex is literally synonymous with gender. If you know of one, I'm all ears, seriously. Otherwise we both know I can easily present definitions from medical texts, psychological ones, etc, but it's not your usual style to demand gratuitous busy work from other posters, as some of our lower watt bulbs demand.
On the other hand, up until about a decade ago, the entire field of medicine used the terms interchangeably. As did anthropology and forensics. And I guarantee that math, physics, chemistry and the other hard sciences don't give a crap about the terms, and when they get used they're used colloquially.
I'm certain you can present definitions from medical texts etc. Can you present some from 1990 that support your assertion? Can you find firmly defined terms that draw a meaningful distinction from prior to 2000?