webinar

http://en.wikipedia.org/wiki/Web_conferencing

Webinar is the result of the blending of the two terms 'web-based' & 'seminar'. It is a kind web conferencing to transmit seminars, lectures, presentations or workshops. If webinars are one-way i.e. there is limited interaction between the speaker and the audience, they will be referred to as webcasts. Webinars can be more collaborative where the lecturer and the audience can interact with each other in a wider range.