"Free multilingual English encyclopedia"
Wikipedia is a collaborative space in which users and contributors write their contributions in the form of entries or wikis. It is organized as an encyclopedia so that under each term there is a page with explanations written by Internet users. You can modify a contribution at any time by correcting or adding text. You can create your own entries if you wish.
All this works under a wikispaces environment created with "wiki software". This encyclopedia created from the collective knowledge is very easy to update, usually under the entries you can find the bibliography related to that article, i.e. the data sources. In case a term could lead to different pages, the system will direct you to a disambiguation page so that you can select which of the terms is more suitable for your search.