The word you want in English is popularization. (Which, you'll note, is also Latin-derived!)
Yes, populus and vulgus are basically synonims, with vulgus having the worst connotations ("folk" VS "the mob" basically), but semantic sliding and usage have made "popular" and its derivates get a base connotation. People don't as easily link "divulgation" and "vulgar".
It'd be nice to have a word that basically means "spreading elevated knowledge to the untrained" without making it sound like we're abasing it. Every time I hear the term "Popular Science" I think of Dr. Sheldon Cooper de...
Basically this: "Eliezer Yudkowsky writes and pretends he's an AI researcher but probably hasn't written so much as an Eliza bot."
While the Eliezer S. Yudkowsky site has lots of divulgation articles and his work on rationality is of indisputable value, I find myself at a loss when I want to respond to this. Which frustrates me very much.
So, to avoid this sort of situation in the future, I have to ask: What did the man, Eliezer S. Yudkowsky, actually accomplish in his own field?
Please don't downvote the hell out of me, I'm just trying to create a future reference for this sort of annoyance.