WordWeb Online

1. Existing in name only
   "the titular head of his party";
   - nominal
    
2. Of or relating to a legal title to something
   "titular rights";
   - titulary
    
3. Of or bearing a title signifying status or function
   "of titular rank"
    
4. Of or pertaining to the title of a work of art
   "performed well in the titular (or title) role"; "the titular theme of the book"
    
5. Of or associated with or bearing a title signifying nobility
   "titular dignitaries"

See also: formal

Encyclopedia: Titular