expatiate
1. [ verb ] add details, as to an account or idea; clarify the meaning of and discourse in a learned way, usually in writing
Synonyms: elaborate expound enlarge exposit expand lucubrate dilate flesh_out
Examples:

"She elaborated on the main ideas in her dissertation"

Related terms: abridge clarify exemplify set_forth specify detail amplification exposition expansion expatiation dilation expansion lucubration
Similar spelling:   expatriate
  expatiation
  excavate
  exuviate
  expiate
  expatriation
  excavator
  expiative
  excavation