Expound (verb)

To set forth or explain in detail; to elaborate on.

Origin:

From latin exponere "to set forth, explain, show".

Examples:

1. The professor expounded on the intricacies of quantum mechanics.
2. She expounded her ideas in a lengthy presentation.
3. He expounded on his theory for hours, leaving no detail unexplored.
4. The lawyer expounded on the legal technicalities of the case.
5. The author expounded on the themes of the novel in an interview.