Elicitation
At Social-Engineer, we define elicitation as the act of obtaining information without directly asking for it.
The National Security Agency has a nice definition of elicitation on their website. You can read it here. Basically, elicitation is the process of extracting information from something or someone.
Additionally, you can read Merriam-Webster’s definition here.
And, thanks to Peter, a researcher from the Center for Usability Research & Engineering, we have these additional links to the topic of elicitation: