MOOC stands for Massive Open Online Course.
Massive– Classes may consist of upto 100,000+ students.
Open– Registration is open to anyone around the world.
Online– The course is taken completely online.
Course– They’re similar to college courses, but don’t offer credit. (Though now things are changing and few MOOCs do offer credits)
In other words, MOOC is a course in which materials and instruction are delivered over the internet to users around the world.The course is designed to connect instructors with learners interested in a common topic and works best with a large user-base and open content.
What is a MOOC? – Video