Wikipedia (pronunciation ) is a free,[5] multilingual encyclopedia project operated by the non-profit Wikimedia Foundation. Its name is a portmanteau of the words wiki (a technology for creating collaborative websites) and encyclopedia. Wikipedia's 10 million articles, about a quarter of which are in English,[2] have been written collaboratively by volunteers around the world, and almost all of its articles can be edited by anyone who can access the Wikipedia website.[6] Launched in 2001 by Jimmy Wales and Larry Sanger,[7] it is currently the largest and most popular[1] general reference work on the Internet.[8][9][10]...