Because we get a lot of folks new to gender discourse around here, and because we’ve developed a lot of our own terminology, shorthand, and slang, we’ve written up a glossary of some of the terms and definitions we generally use. It should be on the list of pages in the top bar. Enjoy!
Edit: It’s not appearing in the top bar very reliably, for reasons I presume are ridiculous. In the meantime, this link ought to work.