In Mac OS X you're able to add unknown words to the global dictionary with the "Add to Dictionary" option. "Refactoring" is a word I often have to add, for instance. Presumably these additions are stored somewhere. So my question is: where? I'd like to be able to see the additions I've made and store them for later backup.
The file containing all of the learned words is located in
en is for english, if you are concerned with other languages, those files are relevant as well. Obviously, replace YOUR PROFILE with the name of your home folder.
Opening the file in TextEdit, you will see a list of all of the words you have "learned".