pro·pound 
/prəˈpaʊnd/ verb
pro·pounds; pro·pound·ed; pro·pound·ing /prəˈpaʊnd/ verb [+ obj] formal : to suggest (an idea, theory, etc.) to a person or group of people to consider : propose
▪ Her new book expands upon the theory propounded in her first book.
▪ Her new book expands upon the theory propounded in her first book.
— pro·pound·er noun, plural pro·pound·ers [count]
