dilate dilate /ˌdaɪˈleɪt/

verb

1. () Become wider  ( distend , dilate )
   become wider
    His pupils were dilated
   His pupils were dilated
   
2. Add details, as to an account or idea; clarify the meaning of and discourse in a learned way, usually in writing  ( dilate , expand , expatiate , elaborate , enlarge , exposit , expound , flesh out , lucubrate )
   add details, as to an account or idea; clarify the meaning of and discourse in a learned way, usually in writing
    She elaborated on the main ideas in her dissertation
   She elaborated on the main ideas in her dissertation