mLearning is a term you might have heard recently when you doing a little research for what kind of training to use for the next rollout at your company. Just like the "e" in eLearning, the "m" in mLearning stands for something too. Mobile.
mLearning takes advantage of time by having learners use their mobile device, like an iPhone or iPad when they tackle a learning course. This kind of learning is best for a short quick course, but it also allows learners to have the course material at their fingertips for quick reference.