Rather than trying to define gender, many modern texts are celebrating the indefinable nature of gender and the need for an ever-evolving open-ended lexicon to express gender. The language, terminology, acronyms, coding, and naming conventions associated with gender is a field that has busted right open. With this in mind, libraries have their own language, and, while it is imperfect, here are some subject headings to try that might help when you are searching in the collection for books and other materials: