https://blogs.scientificamerican.com/observations/4-myths-about-testosterone/In they efforts of the left to pretend that men can be women (and vice versa), they have a new euphemism to deploy:
"Sex atypical chromosomes"
That's a rather amusing way of saying "someone with XY chromosomes who says he's a girl".
While this also will include people with biological sexual confusion (XXY, androgen insensitivity, etc...) it's clearly meant to cover those who are not the sex they are competing as.
From the article: "recent IAAF statements highlight sex-atypical chromosomes and gonads, which functions as a dog whistle to suggest that the targeted women athletes are not “really” women."
What's amusing is all this rule changing and craziness is because the politically correct culture means these authorities can't make the simple statement: Someone with XY sex chromosomes cannot compete in women's events.
That would make things a lot easier, and spare most of the very few biologically confused competitors from being cast out.