The UK Supreme Court has decided a woman is defined by biology.The Supreme Court has just ruled that the term “woman” refers to those born as biologically female.The landmark moment has delivered a blow to the trans community and comes after years of campaigning from gender-critical groups.Here’s a look at how we got here, and just what that means.What just happened?The UK Supreme Court, operated by the five most senior judges in the country, has officially defined what a woman is.Lord Reed, Lady Rose, Lord Lloyd-Jones, Lady Simler and Lord Hodge have all ruled sex is defined by biology.It comes after gender-critical campaigners escalated a case looking at Scottish legislation about how to define gender.Judges were looking at this question: “Is a person with a full GRC [gender recognition certificate] which recognises that their gender is female, a ‘woman’ for the purposes of the Equality Act 2010?”Lord Hodge announced today: “The unanimous decision of this court is that the terms woman and sex in the Equality Act 2010 refer to a biological woman and biological sex.”Essentially that means defining someone based on their reproductive organs and chromosomes rather than their gender identity and any gender-recognition process.It has defined sex as binary.Why was this