One who gets the gist of a subject matter and knows enough to be dangerous with that subject in conversation or writing. One with proven gisting abilities. A gister can participate in conversations with subject experts without getting lost along the way.
Joe is such a gister — those research guys think he really has expertiseness in selective serotonin reuptake inhibition.
If it's complicated and you don't have a lot of time, ask a gister to write it.
The act of learning enough about a subject to be dangerous in conversation or writing. Those who are adept at gisting can participate in conversations with subject experts without getting lost along the way. Anyone who prides themselves on knowing a little about a lot, knowing enough to be dangerous, or being considered a quick study is probably good at gisting.
Hannah spent some time gisting on fluid dynamics so that she could have a better interview with the engineers.
People call Megan a quick study, but she's really just very good at gisting.
I didn't follow everything that Emily said, but I'm gisting my way through it.