Enlarge upon
Definition 1 of 1
Pro Tip 1/3Discussion Depth
Use 'enlarge upon' to indicate giving more details or explanations about a complex subject. 
In his lecture, the professor promised to enlarge upon quantum theory.
Pro Tip 2/3Explain with Care
'Enlarge upon' implies a careful and comprehensive explanation, rather than a superficial one. 
The scientist took the time to enlarge upon her findings, ensuring everyone understood.
Pro Tip 3/3Responding to Questions
Use 'enlarge upon' when providing a more detailed response to someone's question or comment. 
Could you enlarge upon your last point? It intrigued me.