What is the meaning of electronica?

Answer 1

Electronica is a genre of music, created using technical instruments to lay out patters of pitch changes in a synthesizer or sampler.

Created from a base computer program, electronic music is made by DJ's, who are hired to play electronica (techno, harddance, trance, progressive, Dubstep are all genres of electro) at clubs, and raves. Large groups are assembled to enjoy the music and befriend one another in very traditional manners, regarded by the rave community.

Plain and simple, its a synthetic (as apposed to acoustic) musical genre that gathers large crowds of people. Its very much enjoyable and I recommend you look into it yourself.