(名詞) 大型開放式線上課程。這是 massive open online course 的頭字語。

I was asked by the excellent Sheryl Nussbaum-Beach to speak to her PLP class about MOOCs...We started talking about what it meant to have lots and lots of people learning together... Somewhere in there, I called them a massive open online course... For which I have been often chastised.
—Dave Cormier, "20 questions (and answers) about MOOCs," Dave's Educational Blog, July 31, 2012

MOOCs (Massive Open Online Courses) are the latest addition to the acronym-bound lexicon of higher education, and quite possibly the most significant of them all. They represent a new generation of online education, freely accessible on the internet and geared towards very large student numbers.
—Mike Boxall, "MOOCs: a massive opportunity for higher education, or digital hype?," The Guardian, August 8, 2012