What IS E-learning?

There may be other definitions, but I define e-learning (also called elearning or eLearning) as:

The delivery of a learning, training or education program by electronic means.
E-learning involves the use of a computer or electronic device (e.g. a mobile phone) in some way to provide training, educational or learning material. (Derek Stockley 2003)

E-learning can involve a greater variety of equipment than online training or education, for as the name implies, "online" involves using the Internet or an Intranet. CD-ROM and DVD can be used to provide learning materials.
Distance education provided the base for e-learning's development. E-learning can be "on demand". It overcomes timing, attendance and travel difficulties.
An e-journey is one type of e-learning or online training. Blended learning is e-learning combined with other training methods.