I need to be able to save a wiki for reuse. Ideally I'd like to set up a Enterprise wiki and then save out a template for further use. Is it possible to save an Enterprise Wiki as a template in Sharepoint 2013?
Have you looked in to Site Templates, basically you save the site as a template solution that you can base new sites on.
To save as a template:
Navigate to Site Settings ->Under “Site Actions” select “Save Site as Template”