Definition: Wikipedia is a free, open-source encyclopedia created by volunteers. It collects and organizes information on various topics across many languages around the world. The term "wiki" refers to collaborative editing. Wikipedia's definitions are vast but typically include content that's written in English with multiple languages. The word "wikimedia" also can be used as a short name for Wikimedia Foundation, a non-profit organization working with other organizations and governments to manage and improve the resources and services on Wikipedia.