“Priors” in the “Bayesian priors” sense. Beliefs represented as probabilities.
“Expert” is that you’re asking people who should know what they’re talking about, not random laypeople.
“Elicitation” is that there’s a whole process to it. You don’t just ask “What are the odds this movie will do $100 million in domestic box office in its first month?”. You ask lots of smaller questions and use visuals to build up an answer.
I also like how “expert elicitation” sounds like we should be doing a good job eliciting!