expound

expound (http://definr.com/expound)

     v 1: add details, as to an account or idea; clarify the meaning
          of; "She elaborated on the main ideas in her
          dissertation" [syn: elaborate, expatiate, exposit,
           enlarge, flesh out, expand, dilate]
     2: state; "set forth one's reasons" [syn: set forth, exposit]