Answer:
Web site that can be modified by permitted users, from directly within a Web browser.
Step-by-step explanation:
A website refers to the collective name used to describe series of web pages linked together with the same domain name.
Wiki is an abbreviation of the domain name Wikipedia and it's a website that provides a detailed background information about people, places, countries, things, etc.
The term wiki refers to a website that avails permitted users the ability to modify or edit its contents, especially from directly within a web browser.
In conclusion, wiki is a web-based service that provides information about virtually everything in the world.