Okay, kiddo, so you know how sometimes there are people called "priests" or "pastors" who lead and guide religious communities? Well, the act of getting officially appointed to that position is called "ordination".
Now, for a long time, most religions only allowed men to become ordained. But some people have been arguing that this is not fair, because women should also be able to become leaders in their religious communities if they want to. This debate is called the "ordination of women".
Some religions, like the Episcopal Church and the Presbyterian Church (USA), have already started ordaining women. Others, like the Roman Catholic Church, still don't allow it. Some people think that this is because of old traditions and beliefs that don't always make sense anymore, while others believe that there are important reasons why only men should be ordained.
It's a complicated and sensitive topic, but the important thing to remember is that everyone should be treated equally and have the same opportunities, regardless of their gender.