Wikipedia (wiki + encyclopaedia) is a multilingual, web-based encyclopaedia with free content.It Battery Terminals is a wiki, which means it is written by numerous volunteers, and most articles can be changed by anyone with Internet access and an adequate web browser.The project was started on Megaphones January 15, 2001.
Wikipedia currently has more than 3 700 000 articles in many languages (including a million articles in English).